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Finding the Fourth Proportional to 87,504.28, 131,269.30 and 28,320.28

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Solution

The fourth proportional to 87,504.28, 131,269.30 and 28,320.28 is: 42,484.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,504.28 : 131,269.30 = 28,320.28 : x
  2. Step 2: Convert to fraction form
    87,504.28/131,269.30 = 28,320.28/x
  3. Step 3: Cross multiply
    87,504.28x = 131,269.30 × 28,320.28
  4. Step 4: Simplify right side
    87,504.28x = 3,717,583,331.40
  5. Step 5: Solve for x
    x = 3,717,583,331.40/87,504.28
  6. Step 6: Final answer
    x = 42,484.59

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