What is the answer to this problem using the scale 1 in. : 4 m, mika calculated the length, or the longer side of the ballroom, to be 44 m. she decides to change the scale to 1 in. : 7 m. what is the length of the new ballroom?

We know that
with
scale factor 1=1 in/4 m
the longer side of the ballroom>  44 m
scale factor= measure model/measure actual
measure model=scale factor*measure actual
measure model=(1/4)*44> 11 in

with
 scale factor 2=1 in/7 m
measure actual=measure model/scale factor
measure actual=11/(1/7)> 77 m

the answer is 
77 m

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