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Finding the Fourth Proportional to 55,339.20, 82,911.60 and 45,424.80

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Solution

The fourth proportional to 55,339.20, 82,911.60 and 45,424.80 is: 68,057.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,339.20 : 82,911.60 = 45,424.80 : x
  2. Step 2: Convert to fraction form
    55,339.20/82,911.60 = 45,424.80/x
  3. Step 3: Cross multiply
    55,339.20x = 82,911.60 × 45,424.80
  4. Step 4: Simplify right side
    55,339.20x = 3,766,242,847.68
  5. Step 5: Solve for x
    x = 3,766,242,847.68/55,339.20
  6. Step 6: Final answer
    x = 68,057.41

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