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Finding the Fourth Proportional to 88,691.40, 133,037.10 and 55,621.80

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Solution

The fourth proportional to 88,691.40, 133,037.10 and 55,621.80 is: 83,432.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,691.40 : 133,037.10 = 55,621.80 : x
  2. Step 2: Convert to fraction form
    88,691.40/133,037.10 = 55,621.80/x
  3. Step 3: Cross multiply
    88,691.40x = 133,037.10 × 55,621.80
  4. Step 4: Simplify right side
    88,691.40x = 7,399,762,968.78
  5. Step 5: Solve for x
    x = 7,399,762,968.78/88,691.40
  6. Step 6: Final answer
    x = 83,432.70

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