---
product_id: 59066232
title: "Proportional Formulae, Bi-Complex and Tri-Complex, or a System, Algebraically Derived from the Nature of Proportionals, for the Facilitation of That ... Arithmetic Commonly Called the Rule of Three"
brand: "lee john"
price: "7519 kr"
currency: ISK
in_stock: true
category: "Hardcover"
url: https://www.desertcart.is/products/59066232-proportional-formulae-bi-complex-and-tri-complex-or-a-system
store_origin: IS
region: Iceland
---

# Enhanced Calculations Algebraic Precision Complex Relationships Proportional Formulae, Bi-Complex and Tri-Complex, or a System, Algebraically Derived from the Nature of Proportionals, for the Facilitation of That ... Arithmetic Commonly Called the Rule of Three

**Brand:** lee john
**Price:** 7519 kr
**Availability:** ✅ In Stock

## Summary

> 📐 Master Proportions, Conquer Calculations!

## Quick Answers

- **What is this?** Proportional Formulae, Bi-Complex and Tri-Complex, or a System, Algebraically Derived from the Nature of Proportionals, for the Facilitation of That ... Arithmetic Commonly Called the Rule of Three by lee john
- **How much does it cost?** 7519 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/59066232-proportional-formulae-bi-complex-and-tri-complex-or-a-system)

## Best For

- lee john enthusiasts

## Why This Product

- Trusted lee john brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Join the Elite Thinkers:** Be part of a community that values precision and clarity in arithmetic.
- • **Unlock Algebraic Mastery:** Transform your understanding of proportions with cutting-edge formulas.
- • **Future-Proof Your Knowledge:** Stay ahead in your field with advanced mathematical techniques.
- • **Streamlined Problem Solving:** Facilitate complex calculations effortlessly with our bi-complex and tri-complex systems.
- • **Elevate Your Analytical Skills:** Perfect for professionals seeking to enhance their mathematical toolkit.

## Overview

The Proportional Formulae Bi-Complex and Tri-Complex is an advanced mathematical system designed to simplify and enhance the understanding of proportional relationships. This innovative approach provides professionals with the tools needed to tackle complex arithmetic challenges, making it an essential addition to any analytical toolkit.

## Description

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

## Features

- Proportional Formulae Bi Complex and Tri Complex or a System Algebraically Derived from the Nature of Proportionals for the Facilitation of That P

## Images

![Proportional Formulae, Bi-Complex and Tri-Complex, or a System, Algebraically Derived from the Nature of Proportionals, for the Facilitation of That ... Arithmetic Commonly Called the Rule of Three - Image 1](https://images-na.ssl-images-amazon.com/images/I/41DRBs7a6yL.jpg)
![Proportional Formulae, Bi-Complex and Tri-Complex, or a System, Algebraically Derived from the Nature of Proportionals, for the Facilitation of That ... Arithmetic Commonly Called the Rule of Three - Image 2](https://images-na.ssl-images-amazon.com/images/I/51imzBqfybL.jpg)

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-28*