Question

are the number 48,72,96 and 144 in proportion? verify
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Answer 1

Step-by-step explanation:

We know that ,

If a,b,c are in continued proportion, then a:b=b:c

Given,

4,x,9 are in continued proportion.

=> 4:x=x:9

=> 4×9=x×x

=> x=6.