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Finding the Third Proportional to 436,194 and 639,891

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Solution

The third proportional to 436,194 and 639,891 is: 938,711.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,194 : 639,891 = 639,891 : x
  2. Step 2: Convert to fraction form
    436,194/639,891 = 639,891/x
  3. Step 3: Cross multiply
    436,194x = 639,891 × 639,891
  4. Step 4: Simplify right side
    436,194x = 409,460,491,881
  5. Step 5: Solve for x
    x = 409,460,491,881/436,194
  6. Step 6: Final answer
    x = 938,711.88

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.