At a sales volume of 41,000 units, Thoma Corporation's sales commissions (a cost that is variable with respect to sales volume) total $561,700. To the nearest whole dollar, what should be the total sales commissions at a sales volume of 38,800 units? (Assume that this sales volume is within the relevant range.) (Do not round intermediate calculations.) $543,080 $531,560 $561,700 $593,549

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