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Finding the Fourth Proportional to 54,195.20, 81,292.80 and 51,603.20

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Solution

The fourth proportional to 54,195.20, 81,292.80 and 51,603.20 is: 77,404.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,195.20 : 81,292.80 = 51,603.20 : x
  2. Step 2: Convert to fraction form
    54,195.20/81,292.80 = 51,603.20/x
  3. Step 3: Cross multiply
    54,195.20x = 81,292.80 × 51,603.20
  4. Step 4: Simplify right side
    54,195.20x = 4,194,968,616.96
  5. Step 5: Solve for x
    x = 4,194,968,616.96/54,195.20
  6. Step 6: Final answer
    x = 77,404.80

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