3% = 0.03
The total airfare cost = $1,248
The total taxi cost = $1,248 * 0.03 = $37.44
The total cost of all expenditures = $1,248 + $37.44 = $1,285.44
If each cousin paid an equal portion, every cousin would need to pay:
$1,285.44 / 4 = $321.36
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