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Present Value Factors - Ordinary annuity A hospital is considering purchasing a new diagnostic machine that is expected to save $250,000 per year for 4 years. The machine costs $800,000. The hospital has a tax rate of 35 percent and they use straight-line depreciation for tax purposes. Their cost of capital is 8 percent. Calculate the following components of net present value (rounded to the nearest whole dollar). Use a minus sign to express negative numbers. Present value of the initial investment in the machine \$ Present value of the savings, net of tax Present value of the depreciation tax shield