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Finding the Fourth Proportional to 72,251.28, 99,571.68 and 52,073.28

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Solution

The fourth proportional to 72,251.28, 99,571.68 and 52,073.28 is: 71,763.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,251.28 : 99,571.68 = 52,073.28 : x
  2. Step 2: Convert to fraction form
    72,251.28/99,571.68 = 52,073.28/x
  3. Step 3: Cross multiply
    72,251.28x = 99,571.68 × 52,073.28
  4. Step 4: Simplify right side
    72,251.28x = 5,185,023,972.71
  5. Step 5: Solve for x
    x = 5,185,023,972.71/72,251.28
  6. Step 6: Final answer
    x = 71,763.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.