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Finding the Fourth Proportional to 476,070.80, 712,939.80 and 317,440.40

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Solution

The fourth proportional to 476,070.80, 712,939.80 and 317,440.40 is: 475,382.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,070.80 : 712,939.80 = 317,440.40 : x
  2. Step 2: Convert to fraction form
    476,070.80/712,939.80 = 317,440.40/x
  3. Step 3: Cross multiply
    476,070.80x = 712,939.80 × 317,440.40
  4. Step 4: Simplify right side
    476,070.80x = 226,315,895,287.92
  5. Step 5: Solve for x
    x = 226,315,895,287.92/476,070.80
  6. Step 6: Final answer
    x = 475,382.85

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