Answer: 174,899
This is one single number just a bit under 175 thousand. Delete the comma if needed.
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Work Shown:
x = number of total doctors
24.7% of x = number of female doctors
0.247x = 43200
x = 43200/(0.247)
x = 174,898.785425101 approximately
x = 174,899 when rounding to the nearest whole number