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Finding the Third Proportional to 11,892 and 15,534

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Solution

The third proportional to 11,892 and 15,534 is: 20,291.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,892 : 15,534 = 15,534 : x
  2. Step 2: Convert to fraction form
    11,892/15,534 = 15,534/x
  3. Step 3: Cross multiply
    11,892x = 15,534 × 15,534
  4. Step 4: Simplify right side
    11,892x = 241,305,156
  5. Step 5: Solve for x
    x = 241,305,156/11,892
  6. Step 6: Final answer
    x = 20,291.39

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.