The cost structure of two firms competing in the same industry is represented by the following cost formulas: Company X = $1,763,000 + $41/unit; Company Z = $944,000 + $80/unit. The selling price is $131 per unit for both companies. Required: Calculate the indifference point between the two cost structures, that is, the amount of unit sales that produce the same operating income for Company X and Company Z. If sales volume were expected to increase by 25% over