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Finding the Fourth Proportional to 16,471.32, 22,730.40 and 15,215.52

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Solution

The fourth proportional to 16,471.32, 22,730.40 and 15,215.52 is: 20,997.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,471.32 : 22,730.40 = 15,215.52 : x
  2. Step 2: Convert to fraction form
    16,471.32/22,730.40 = 15,215.52/x
  3. Step 3: Cross multiply
    16,471.32x = 22,730.40 × 15,215.52
  4. Step 4: Simplify right side
    16,471.32x = 345,854,855.81
  5. Step 5: Solve for x
    x = 345,854,855.81/16,471.32
  6. Step 6: Final answer
    x = 20,997.40

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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.