To determine how much more White households would earn than Black households over a working life span of 54 years, we need to calculate the difference in median household income and then multiply that difference by the number of years.
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Median Household Incomes:
- White: $72,204
- Black: $45,438
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Difference in Median Household Income: \[ 72,204 - 45,438 = 26,766 \]
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Total Income Over 54 Years: \[ 26,766 \times 54 \approx 1,445,484 \]
Thus, White households would earn approximately $1.4 million more than Black households over a 54-year working life.
Therefore, the correct response is: White households would earn $1.4 million more than Black households.