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Finding the Third Proportional to 16,920 and 25,668

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Solution

The third proportional to 16,920 and 25,668 is: 38,938.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,920 : 25,668 = 25,668 : x
  2. Step 2: Convert to fraction form
    16,920/25,668 = 25,668/x
  3. Step 3: Cross multiply
    16,920x = 25,668 × 25,668
  4. Step 4: Simplify right side
    16,920x = 658,846,224
  5. Step 5: Solve for x
    x = 658,846,224/16,920
  6. Step 6: Final answer
    x = 38,938.90

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.