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Finding the Fourth Proportional to 86,562.40, 129,843.60 and 57,013.60

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Solution

The fourth proportional to 86,562.40, 129,843.60 and 57,013.60 is: 85,520.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,562.40 : 129,843.60 = 57,013.60 : x
  2. Step 2: Convert to fraction form
    86,562.40/129,843.60 = 57,013.60/x
  3. Step 3: Cross multiply
    86,562.40x = 129,843.60 × 57,013.60
  4. Step 4: Simplify right side
    86,562.40x = 7,402,851,072.96
  5. Step 5: Solve for x
    x = 7,402,851,072.96/86,562.40
  6. Step 6: Final answer
    x = 85,520.40

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