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Finding the Fourth Proportional to 476,885.86, 715,439.52 and 139,912.90

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Solution

The fourth proportional to 476,885.86, 715,439.52 and 139,912.90 is: 209,901.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,885.86 : 715,439.52 = 139,912.90 : x
  2. Step 2: Convert to fraction form
    476,885.86/715,439.52 = 139,912.90/x
  3. Step 3: Cross multiply
    476,885.86x = 715,439.52 × 139,912.90
  4. Step 4: Simplify right side
    476,885.86x = 100,099,218,017.81
  5. Step 5: Solve for x
    x = 100,099,218,017.81/476,885.86
  6. Step 6: Final answer
    x = 209,901.84

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