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Finding the Third Proportional to 419,558 and 629,192

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Solution

The third proportional to 419,558 and 629,192 is: 943,570.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,558 : 629,192 = 629,192 : x
  2. Step 2: Convert to fraction form
    419,558/629,192 = 629,192/x
  3. Step 3: Cross multiply
    419,558x = 629,192 × 629,192
  4. Step 4: Simplify right side
    419,558x = 395,882,572,864
  5. Step 5: Solve for x
    x = 395,882,572,864/419,558
  6. Step 6: Final answer
    x = 943,570.55

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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.