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Finding the Third Proportional to 6,691.50 and 7,299

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Solution

The third proportional to 6,691.50 and 7,299 is: 7,961.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,691.50 : 7,299 = 7,299 : x
  2. Step 2: Convert to fraction form
    6,691.50/7,299 = 7,299/x
  3. Step 3: Cross multiply
    6,691.50x = 7,299 × 7,299
  4. Step 4: Simplify right side
    6,691.50x = 53,275,401
  5. Step 5: Solve for x
    x = 53,275,401/6,691.50
  6. Step 6: Final answer
    x = 7,961.65

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.