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Finding the Third Proportional to 11,727.28 and 17,691.75

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Solution

The third proportional to 11,727.28 and 17,691.75 is: 26,689.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,727.28 : 17,691.75 = 17,691.75 : x
  2. Step 2: Convert to fraction form
    11,727.28/17,691.75 = 17,691.75/x
  3. Step 3: Cross multiply
    11,727.28x = 17,691.75 × 17,691.75
  4. Step 4: Simplify right side
    11,727.28x = 312,998,018.06
  5. Step 5: Solve for x
    x = 312,998,018.06/11,727.28
  6. Step 6: Final answer
    x = 26,689.73

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.