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Finding the Third Proportional to 6,115.50 and 6,697.69

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Solution

The third proportional to 6,115.50 and 6,697.69 is: 7,335.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,115.50 : 6,697.69 = 6,697.69 : x
  2. Step 2: Convert to fraction form
    6,115.50/6,697.69 = 6,697.69/x
  3. Step 3: Cross multiply
    6,115.50x = 6,697.69 × 6,697.69
  4. Step 4: Simplify right side
    6,115.50x = 44,859,017.85
  5. Step 5: Solve for x
    x = 44,859,017.85/6,115.50
  6. Step 6: Final answer
    x = 7,335.30

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Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.