plz full solution bata do : The first three terms of a proportion are 15,20,30.Find the fourth term.
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let 4th proportion be x
we have 15:20::30:x
so,20×30=15×x
600/15=x
so 4th proportion or x=40
we have 15:20::30:x
so,20×30=15×x
600/15=x
so 4th proportion or x=40
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