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Finding the Third Proportional to 1,992 and 3,198

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Solution

The third proportional to 1,992 and 3,198 is: 5,134.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992 : 3,198 = 3,198 : x
  2. Step 2: Convert to fraction form
    1,992/3,198 = 3,198/x
  3. Step 3: Cross multiply
    1,992x = 3,198 × 3,198
  4. Step 4: Simplify right side
    1,992x = 10,227,204
  5. Step 5: Solve for x
    x = 10,227,204/1,992
  6. Step 6: Final answer
    x = 5,134.14

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.