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Finding the Third Proportional to 16,890 and 25,999

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Solution

The third proportional to 16,890 and 25,999 is: 40,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,890 : 25,999 = 25,999 : x
  2. Step 2: Convert to fraction form
    16,890/25,999 = 25,999/x
  3. Step 3: Cross multiply
    16,890x = 25,999 × 25,999
  4. Step 4: Simplify right side
    16,890x = 675,948,001
  5. Step 5: Solve for x
    x = 675,948,001/16,890
  6. Step 6: Final answer
    x = 40,020.60

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.