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Finding the Fourth Proportional to 83,961.86, 115,871.65 and 47,665.85

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Solution

The fourth proportional to 83,961.86, 115,871.65 and 47,665.85 is: 65,781.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,961.86 : 115,871.65 = 47,665.85 : x
  2. Step 2: Convert to fraction form
    83,961.86/115,871.65 = 47,665.85/x
  3. Step 3: Cross multiply
    83,961.86x = 115,871.65 × 47,665.85
  4. Step 4: Simplify right side
    83,961.86x = 5,523,119,989.63
  5. Step 5: Solve for x
    x = 5,523,119,989.63/83,961.86
  6. Step 6: Final answer
    x = 65,781.30

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