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Finding the Fourth Proportional to 18,049.32, 27,073.98 and 11,891.88

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Solution

The fourth proportional to 18,049.32, 27,073.98 and 11,891.88 is: 17,837.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,049.32 : 27,073.98 = 11,891.88 : x
  2. Step 2: Convert to fraction form
    18,049.32/27,073.98 = 11,891.88/x
  3. Step 3: Cross multiply
    18,049.32x = 27,073.98 × 11,891.88
  4. Step 4: Simplify right side
    18,049.32x = 321,960,521.28
  5. Step 5: Solve for x
    x = 321,960,521.28/18,049.32
  6. Step 6: Final answer
    x = 17,837.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.