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Finding the Fourth Proportional to 69,439.55, 103,995.30 and 47,132.15

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Solution

The fourth proportional to 69,439.55, 103,995.30 and 47,132.15 is: 70,586.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,439.55 : 103,995.30 = 47,132.15 : x
  2. Step 2: Convert to fraction form
    69,439.55/103,995.30 = 47,132.15/x
  3. Step 3: Cross multiply
    69,439.55x = 103,995.30 × 47,132.15
  4. Step 4: Simplify right side
    69,439.55x = 4,901,522,078.90
  5. Step 5: Solve for x
    x = 4,901,522,078.90/69,439.55
  6. Step 6: Final answer
    x = 70,586.89

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