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Finding the Fourth Proportional to 115,040.76, 172,639.96 and 40,160.92

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Solution

The fourth proportional to 115,040.76, 172,639.96 and 40,160.92 is: 60,268.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,040.76 : 172,639.96 = 40,160.92 : x
  2. Step 2: Convert to fraction form
    115,040.76/172,639.96 = 40,160.92/x
  3. Step 3: Cross multiply
    115,040.76x = 172,639.96 × 40,160.92
  4. Step 4: Simplify right side
    115,040.76x = 6,933,379,622.36
  5. Step 5: Solve for x
    x = 6,933,379,622.36/115,040.76
  6. Step 6: Final answer
    x = 60,268.90

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