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Finding the Third Proportional to 181,868 and 394,840

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Solution

The third proportional to 181,868 and 394,840 is: 857,207.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,868 : 394,840 = 394,840 : x
  2. Step 2: Convert to fraction form
    181,868/394,840 = 394,840/x
  3. Step 3: Cross multiply
    181,868x = 394,840 × 394,840
  4. Step 4: Simplify right side
    181,868x = 155,898,625,600
  5. Step 5: Solve for x
    x = 155,898,625,600/181,868
  6. Step 6: Final answer
    x = 857,207.57

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.