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Finding the Third Proportional to 3,286.50 and 7,059

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Solution

The third proportional to 3,286.50 and 7,059 is: 15,161.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,286.50 : 7,059 = 7,059 : x
  2. Step 2: Convert to fraction form
    3,286.50/7,059 = 7,059/x
  3. Step 3: Cross multiply
    3,286.50x = 7,059 × 7,059
  4. Step 4: Simplify right side
    3,286.50x = 49,829,481
  5. Step 5: Solve for x
    x = 49,829,481/3,286.50
  6. Step 6: Final answer
    x = 15,161.87

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.