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Finding the Fourth Proportional to 431,724.40, 647,586.60 and 361,740.40

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Solution

The fourth proportional to 431,724.40, 647,586.60 and 361,740.40 is: 542,610.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,724.40 : 647,586.60 = 361,740.40 : x
  2. Step 2: Convert to fraction form
    431,724.40/647,586.60 = 361,740.40/x
  3. Step 3: Cross multiply
    431,724.40x = 647,586.60 × 361,740.40
  4. Step 4: Simplify right side
    431,724.40x = 234,258,235,718.64
  5. Step 5: Solve for x
    x = 234,258,235,718.64/431,724.40
  6. Step 6: Final answer
    x = 542,610.60

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