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Frequently Asked Questions
How do I simplify a ratio?
Divide both terms by their greatest common divisor. For example 16:9 is already in simplest form, while 10:15 simplifies to 2:3.
How do I solve a proportion?
In A:B = C:D the cross-products are equal (AĆD = BĆC). Leave one value blank and the calculator solves for it.
Simplify a ratio to its lowest terms or solve a proportion A:B = C:D for the missing value.