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Finding the Third Proportional to 13,992 and 15,112

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Solution

The third proportional to 13,992 and 15,112 is: 16,321.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,992 : 15,112 = 15,112 : x
  2. Step 2: Convert to fraction form
    13,992/15,112 = 15,112/x
  3. Step 3: Cross multiply
    13,992x = 15,112 × 15,112
  4. Step 4: Simplify right side
    13,992x = 228,372,544
  5. Step 5: Solve for x
    x = 228,372,544/13,992
  6. Step 6: Final answer
    x = 16,321.65

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.