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Finding the Third Proportional to 16,724 and 38,880

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Solution

The third proportional to 16,724 and 38,880 is: 90,388.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,724 : 38,880 = 38,880 : x
  2. Step 2: Convert to fraction form
    16,724/38,880 = 38,880/x
  3. Step 3: Cross multiply
    16,724x = 38,880 × 38,880
  4. Step 4: Simplify right side
    16,724x = 1,511,654,400
  5. Step 5: Solve for x
    x = 1,511,654,400/16,724
  6. Step 6: Final answer
    x = 90,388.33

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.