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Finding the Third Proportional to 15,139 and 25,019

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Solution

The third proportional to 15,139 and 25,019 is: 41,346.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139 : 25,019 = 25,019 : x
  2. Step 2: Convert to fraction form
    15,139/25,019 = 25,019/x
  3. Step 3: Cross multiply
    15,139x = 25,019 × 25,019
  4. Step 4: Simplify right side
    15,139x = 625,950,361
  5. Step 5: Solve for x
    x = 625,950,361/15,139
  6. Step 6: Final answer
    x = 41,346.88

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Why These Related Problems?

These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.