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Finding the Third Proportional to 5,719.50 and 11,721

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Solution

The third proportional to 5,719.50 and 11,721 is: 24,019.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,719.50 : 11,721 = 11,721 : x
  2. Step 2: Convert to fraction form
    5,719.50/11,721 = 11,721/x
  3. Step 3: Cross multiply
    5,719.50x = 11,721 × 11,721
  4. Step 4: Simplify right side
    5,719.50x = 137,381,841
  5. Step 5: Solve for x
    x = 137,381,841/5,719.50
  6. Step 6: Final answer
    x = 24,019.90

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.