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Finding the Fourth Proportional to 72,226.56, 99,691.20 and 43,952.16

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Solution

The fourth proportional to 72,226.56, 99,691.20 and 43,952.16 is: 60,665.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,226.56 : 99,691.20 = 43,952.16 : x
  2. Step 2: Convert to fraction form
    72,226.56/99,691.20 = 43,952.16/x
  3. Step 3: Cross multiply
    72,226.56x = 99,691.20 × 43,952.16
  4. Step 4: Simplify right side
    72,226.56x = 4,381,643,572.99
  5. Step 5: Solve for x
    x = 4,381,643,572.99/72,226.56
  6. Step 6: Final answer
    x = 60,665.27

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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.