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Finding the Fourth Proportional to 122,641.20, 183,961.80 and 89,593.20

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Solution

The fourth proportional to 122,641.20, 183,961.80 and 89,593.20 is: 134,389.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,641.20 : 183,961.80 = 89,593.20 : x
  2. Step 2: Convert to fraction form
    122,641.20/183,961.80 = 89,593.20/x
  3. Step 3: Cross multiply
    122,641.20x = 183,961.80 × 89,593.20
  4. Step 4: Simplify right side
    122,641.20x = 16,481,726,339.76
  5. Step 5: Solve for x
    x = 16,481,726,339.76/122,641.20
  6. Step 6: Final answer
    x = 134,389.80

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