Question

The first , second and fourth terms of a proportion are 9,21 and 77. Find the third term?

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EXPLAIN BY STEP BY STEP EXPLANATION ​

Answer 1

Step-by-step explanation:

let the third term be x,

9:21::x:77

= 9*77= 21x

= 693= 21x

= 693/21 = x

= 33 = x

Answer 2

Answer:

9:21::X:77

Step-by-step explanation:

to equal the ratio x=21