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Finding the Third Proportional to 269,252 and 422,412

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Solution

The third proportional to 269,252 and 422,412 is: 662,694.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,252 : 422,412 = 422,412 : x
  2. Step 2: Convert to fraction form
    269,252/422,412 = 422,412/x
  3. Step 3: Cross multiply
    269,252x = 422,412 × 422,412
  4. Step 4: Simplify right side
    269,252x = 178,431,897,744
  5. Step 5: Solve for x
    x = 178,431,897,744/269,252
  6. Step 6: Final answer
    x = 662,694.79

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.