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Finding the Fourth Proportional to 15,028.32, 20,737.92 and 9,060

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Solution

The fourth proportional to 15,028.32, 20,737.92 and 9,060 is: 12,502.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,028.32 : 20,737.92 = 9,060 : x
  2. Step 2: Convert to fraction form
    15,028.32/20,737.92 = 9,060/x
  3. Step 3: Cross multiply
    15,028.32x = 20,737.92 × 9,060
  4. Step 4: Simplify right side
    15,028.32x = 187,885,555.20
  5. Step 5: Solve for x
    x = 187,885,555.20/15,028.32
  6. Step 6: Final answer
    x = 12,502.10

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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.