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Finding the Third Proportional to 415,372 and 622,367

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Solution

The third proportional to 415,372 and 622,367 is: 932,515.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,372 : 622,367 = 622,367 : x
  2. Step 2: Convert to fraction form
    415,372/622,367 = 622,367/x
  3. Step 3: Cross multiply
    415,372x = 622,367 × 622,367
  4. Step 4: Simplify right side
    415,372x = 387,340,682,689
  5. Step 5: Solve for x
    x = 387,340,682,689/415,372
  6. Step 6: Final answer
    x = 932,515.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.