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Finding the Third Proportional to 4,092 and 6,401.25

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Solution

The third proportional to 4,092 and 6,401.25 is: 10,013.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,092 : 6,401.25 = 6,401.25 : x
  2. Step 2: Convert to fraction form
    4,092/6,401.25 = 6,401.25/x
  3. Step 3: Cross multiply
    4,092x = 6,401.25 × 6,401.25
  4. Step 4: Simplify right side
    4,092x = 40,976,001.56
  5. Step 5: Solve for x
    x = 40,976,001.56/4,092
  6. Step 6: Final answer
    x = 10,013.69

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.