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Finding the Fourth Proportional to 8,700.96, 13,042.56 and 3,432.54

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Solution

The fourth proportional to 8,700.96, 13,042.56 and 3,432.54 is: 5,145.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.96 : 13,042.56 = 3,432.54 : x
  2. Step 2: Convert to fraction form
    8,700.96/13,042.56 = 3,432.54/x
  3. Step 3: Cross multiply
    8,700.96x = 13,042.56 × 3,432.54
  4. Step 4: Simplify right side
    8,700.96x = 44,769,108.90
  5. Step 5: Solve for x
    x = 44,769,108.90/8,700.96
  6. Step 6: Final answer
    x = 5,145.31

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