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Finding the Fourth Proportional to 54,258.80, 81,388.20 and 45,510.80

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Solution

The fourth proportional to 54,258.80, 81,388.20 and 45,510.80 is: 68,266.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,258.80 : 81,388.20 = 45,510.80 : x
  2. Step 2: Convert to fraction form
    54,258.80/81,388.20 = 45,510.80/x
  3. Step 3: Cross multiply
    54,258.80x = 81,388.20 × 45,510.80
  4. Step 4: Simplify right side
    54,258.80x = 3,704,042,092.56
  5. Step 5: Solve for x
    x = 3,704,042,092.56/54,258.80
  6. Step 6: Final answer
    x = 68,266.20

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