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Finding the Third Proportional to 3,291.89 and 7,250.13

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Solution

The third proportional to 3,291.89 and 7,250.13 is: 15,967.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291.89 : 7,250.13 = 7,250.13 : x
  2. Step 2: Convert to fraction form
    3,291.89/7,250.13 = 7,250.13/x
  3. Step 3: Cross multiply
    3,291.89x = 7,250.13 × 7,250.13
  4. Step 4: Simplify right side
    3,291.89x = 52,564,425.80
  5. Step 5: Solve for x
    x = 52,564,425.80/3,291.89
  6. Step 6: Final answer
    x = 15,967.85

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.