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Finding the Third Proportional to 3,968 and 6,612

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Solution

The third proportional to 3,968 and 6,612 is: 11,017.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968 : 6,612 = 6,612 : x
  2. Step 2: Convert to fraction form
    3,968/6,612 = 6,612/x
  3. Step 3: Cross multiply
    3,968x = 6,612 × 6,612
  4. Step 4: Simplify right side
    3,968x = 43,718,544
  5. Step 5: Solve for x
    x = 43,718,544/3,968
  6. Step 6: Final answer
    x = 11,017.78

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.