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Finding the Third Proportional to 11,372 and 15,186

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Solution

The third proportional to 11,372 and 15,186 is: 20,279.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,372 : 15,186 = 15,186 : x
  2. Step 2: Convert to fraction form
    11,372/15,186 = 15,186/x
  3. Step 3: Cross multiply
    11,372x = 15,186 × 15,186
  4. Step 4: Simplify right side
    11,372x = 230,614,596
  5. Step 5: Solve for x
    x = 230,614,596/11,372
  6. Step 6: Final answer
    x = 20,279.16

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.