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Finding the Third Proportional to 3,272 and 3,912

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Solution

The third proportional to 3,272 and 3,912 is: 4,677.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,272 : 3,912 = 3,912 : x
  2. Step 2: Convert to fraction form
    3,272/3,912 = 3,912/x
  3. Step 3: Cross multiply
    3,272x = 3,912 × 3,912
  4. Step 4: Simplify right side
    3,272x = 15,303,744
  5. Step 5: Solve for x
    x = 15,303,744/3,272
  6. Step 6: Final answer
    x = 4,677.18

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These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.