Based on the CPI in 1978 and the CPI in 1990, the 1978 doctor's salary in 1990 dollars is $44,904.76.
This can be found as:
= CPI in 1990 / CPI in 1978 x Salary in 1978
Solving gives:
= 230 / 210 x 41,000
= $44,904.76
The rest of the question is:
Given this information, a doctor's 1978 salary in 1990 dollars is $__________.
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