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Finding the Third Proportional to 189,198 and 413,919

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Solution

The third proportional to 189,198 and 413,919 is: 905,553.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,198 : 413,919 = 413,919 : x
  2. Step 2: Convert to fraction form
    189,198/413,919 = 413,919/x
  3. Step 3: Cross multiply
    189,198x = 413,919 × 413,919
  4. Step 4: Simplify right side
    189,198x = 171,328,938,561
  5. Step 5: Solve for x
    x = 171,328,938,561/189,198
  6. Step 6: Final answer
    x = 905,553.65

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.