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Finding the Fourth Proportional to 91,939.90, 137,785.28 and 47,597.80

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Solution

The fourth proportional to 91,939.90, 137,785.28 and 47,597.80 is: 71,332.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,939.90 : 137,785.28 = 47,597.80 : x
  2. Step 2: Convert to fraction form
    91,939.90/137,785.28 = 47,597.80/x
  3. Step 3: Cross multiply
    91,939.90x = 137,785.28 × 47,597.80
  4. Step 4: Simplify right side
    91,939.90x = 6,558,276,200.38
  5. Step 5: Solve for x
    x = 6,558,276,200.38/91,939.90
  6. Step 6: Final answer
    x = 71,332.21

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