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Finding the Third Proportional to 11,691 and 25,381.50

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Solution

The third proportional to 11,691 and 25,381.50 is: 55,103.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,691 : 25,381.50 = 25,381.50 : x
  2. Step 2: Convert to fraction form
    11,691/25,381.50 = 25,381.50/x
  3. Step 3: Cross multiply
    11,691x = 25,381.50 × 25,381.50
  4. Step 4: Simplify right side
    11,691x = 644,220,542.25
  5. Step 5: Solve for x
    x = 644,220,542.25/11,691
  6. Step 6: Final answer
    x = 55,103.97

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.