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Question

Determine if the following are in proportion: 15,45,40,120


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Solution

We have,

15,45,40,120

Ratioof15to45=1545Dividingnumeratoranddenominatorby15=13=1:3

Ratioof40and120=40120Dividingnumeratoranddenominatorby40=13=1:3

Since, 15:45=40:120

Hence, 15,45,40,120 are in proportion.


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