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Finding the Fourth Proportional to 49,423.60, 74,140.80 and 47,868.40

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Solution

The fourth proportional to 49,423.60, 74,140.80 and 47,868.40 is: 71,807.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,423.60 : 74,140.80 = 47,868.40 : x
  2. Step 2: Convert to fraction form
    49,423.60/74,140.80 = 47,868.40/x
  3. Step 3: Cross multiply
    49,423.60x = 74,140.80 × 47,868.40
  4. Step 4: Simplify right side
    49,423.60x = 3,549,001,470.72
  5. Step 5: Solve for x
    x = 3,549,001,470.72/49,423.60
  6. Step 6: Final answer
    x = 71,807.83

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