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Finding the Third Proportional to 3,589 and 6,812

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Solution

The third proportional to 3,589 and 6,812 is: 12,929.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,589 : 6,812 = 6,812 : x
  2. Step 2: Convert to fraction form
    3,589/6,812 = 6,812/x
  3. Step 3: Cross multiply
    3,589x = 6,812 × 6,812
  4. Step 4: Simplify right side
    3,589x = 46,403,344
  5. Step 5: Solve for x
    x = 46,403,344/3,589
  6. Step 6: Final answer
    x = 12,929.32

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Why These Related Problems?

These problems maintain the same ratio (1.90) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.