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Finding the Fourth Proportional to 317,807.80, 476,322.90 and 140,126.20

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Solution

The fourth proportional to 317,807.80, 476,322.90 and 140,126.20 is: 210,017.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,807.80 : 476,322.90 = 140,126.20 : x
  2. Step 2: Convert to fraction form
    317,807.80/476,322.90 = 140,126.20/x
  3. Step 3: Cross multiply
    317,807.80x = 476,322.90 × 140,126.20
  4. Step 4: Simplify right side
    317,807.80x = 66,745,317,949.98
  5. Step 5: Solve for x
    x = 66,745,317,949.98/317,807.80
  6. Step 6: Final answer
    x = 210,017.87

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