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Finding the Third Proportional to 3,998 and 4,366

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Solution

The third proportional to 3,998 and 4,366 is: 4,767.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998 : 4,366 = 4,366 : x
  2. Step 2: Convert to fraction form
    3,998/4,366 = 4,366/x
  3. Step 3: Cross multiply
    3,998x = 4,366 × 4,366
  4. Step 4: Simplify right side
    3,998x = 19,061,956
  5. Step 5: Solve for x
    x = 19,061,956/3,998
  6. Step 6: Final answer
    x = 4,767.87

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.