Rule of three

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The rule of three is a mathematical rule that allows you to solve problems based on proportions.

By having three numbers: a, b, c, such that, ( a / b = c / x) you can calculate the unknown number. The app uses the method to calculate the unknown value immediately based on the proportion between two numbers and the third number.

You can also:

- label the variables

- explore the history of calculations

- share calculations