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Finding the Fourth Proportional to 416,680.80, 625,021.20 and 136,226.40

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Solution

The fourth proportional to 416,680.80, 625,021.20 and 136,226.40 is: 204,339.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,680.80 : 625,021.20 = 136,226.40 : x
  2. Step 2: Convert to fraction form
    416,680.80/625,021.20 = 136,226.40/x
  3. Step 3: Cross multiply
    416,680.80x = 625,021.20 × 136,226.40
  4. Step 4: Simplify right side
    416,680.80x = 85,144,387,999.68
  5. Step 5: Solve for x
    x = 85,144,387,999.68/416,680.80
  6. Step 6: Final answer
    x = 204,339.60

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