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Finding the Third Proportional to 11,500 and 24,920

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Solution

The third proportional to 11,500 and 24,920 is: 54,000.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,500 : 24,920 = 24,920 : x
  2. Step 2: Convert to fraction form
    11,500/24,920 = 24,920/x
  3. Step 3: Cross multiply
    11,500x = 24,920 × 24,920
  4. Step 4: Simplify right side
    11,500x = 621,006,400
  5. Step 5: Solve for x
    x = 621,006,400/11,500
  6. Step 6: Final answer
    x = 54,000.56

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.