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Finding the Fourth Proportional to 58,471.20, 80,691.12 and 33,320.16

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Solution

The fourth proportional to 58,471.20, 80,691.12 and 33,320.16 is: 45,982.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,471.20 : 80,691.12 = 33,320.16 : x
  2. Step 2: Convert to fraction form
    58,471.20/80,691.12 = 33,320.16/x
  3. Step 3: Cross multiply
    58,471.20x = 80,691.12 × 33,320.16
  4. Step 4: Simplify right side
    58,471.20x = 2,688,641,028.98
  5. Step 5: Solve for x
    x = 2,688,641,028.98/58,471.20
  6. Step 6: Final answer
    x = 45,982.31

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