From the problem statement we can write:
47,400 is 26.3% of total registered doctors
We need to convert this word equation to algebraic equation noting that,
• "is" means "="
,
• "of" means "x"
Also, remember to convert the percentage to decimal by dividing by 100,

The algebraic equation, thus, is:

We let total be "t" and solve :

Rounding to the nearest whole number,
Total Registered Doctors = 180,228
Answer:
180,228