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Finding the Third Proportional to 6,424.50 and 11,508

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Solution

The third proportional to 6,424.50 and 11,508 is: 20,613.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,424.50 : 11,508 = 11,508 : x
  2. Step 2: Convert to fraction form
    6,424.50/11,508 = 11,508/x
  3. Step 3: Cross multiply
    6,424.50x = 11,508 × 11,508
  4. Step 4: Simplify right side
    6,424.50x = 132,434,064
  5. Step 5: Solve for x
    x = 132,434,064/6,424.50
  6. Step 6: Final answer
    x = 20,613.91

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Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.