Final answer:
To calculate the target market size, multiply the estimated population by the percentage in the target age group.
Step-by-step explanation:
The subject of this question is Mathematics, and it pertains to calculating the target market size. In this case, the target market size is 67,390 individuals.
To calculate the target market size, we need to first identify the percentage of the population within the target age group. In the given example, the percentage is 61%.
Then, we multiply the total estimated population of the area (176,499) by the percentage in the target age group (61%) to find the estimated number of individuals within the target age group. This calculation gives us the estimated size of the target market, which is 67,390 individuals.