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Finding the Third Proportional to 3,992 and 7,232

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Solution

The third proportional to 3,992 and 7,232 is: 13,101.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992 : 7,232 = 7,232 : x
  2. Step 2: Convert to fraction form
    3,992/7,232 = 7,232/x
  3. Step 3: Cross multiply
    3,992x = 7,232 × 7,232
  4. Step 4: Simplify right side
    3,992x = 52,301,824
  5. Step 5: Solve for x
    x = 52,301,824/3,992
  6. Step 6: Final answer
    x = 13,101.66

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Why These Related Problems?

These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.