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Finding the Third Proportional to 3,408 and 7,232

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Solution

The third proportional to 3,408 and 7,232 is: 15,346.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408 : 7,232 = 7,232 : x
  2. Step 2: Convert to fraction form
    3,408/7,232 = 7,232/x
  3. Step 3: Cross multiply
    3,408x = 7,232 × 7,232
  4. Step 4: Simplify right side
    3,408x = 52,301,824
  5. Step 5: Solve for x
    x = 52,301,824/3,408
  6. Step 6: Final answer
    x = 15,346.78

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.