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Finding the Fourth Proportional to 118,219.70, 177,329.55 and 91,781.30

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Solution

The fourth proportional to 118,219.70, 177,329.55 and 91,781.30 is: 137,671.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,219.70 : 177,329.55 = 91,781.30 : x
  2. Step 2: Convert to fraction form
    118,219.70/177,329.55 = 91,781.30/x
  3. Step 3: Cross multiply
    118,219.70x = 177,329.55 × 91,781.30
  4. Step 4: Simplify right side
    118,219.70x = 16,275,536,627.42
  5. Step 5: Solve for x
    x = 16,275,536,627.42/118,219.70
  6. Step 6: Final answer
    x = 137,671.95

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