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Finding the Third Proportional to 3,407 and 7,432

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Solution

The third proportional to 3,407 and 7,432 is: 16,212.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,407 : 7,432 = 7,432 : x
  2. Step 2: Convert to fraction form
    3,407/7,432 = 7,432/x
  3. Step 3: Cross multiply
    3,407x = 7,432 × 7,432
  4. Step 4: Simplify right side
    3,407x = 55,234,624
  5. Step 5: Solve for x
    x = 55,234,624/3,407
  6. Step 6: Final answer
    x = 16,212.10

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.