the trick for working ratio and proportions out is to,eg, say if there 5 girls in a class and the ratio of how many boys was 5:1 there will be 25 boys because you simply have to do 5x5=25 then simply times it by one .i think
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Proportion.
A proportion
Two ratios that are equivalent are said to be in proportion
A proportion is a statement that two ratios or rates are equal.
Fractions are ratios. Equivalent fractions form a proportion.