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Finding the Third Proportional to 181,717 and 391,208

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Solution

The third proportional to 181,717 and 391,208 is: 842,209.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,717 : 391,208 = 391,208 : x
  2. Step 2: Convert to fraction form
    181,717/391,208 = 391,208/x
  3. Step 3: Cross multiply
    181,717x = 391,208 × 391,208
  4. Step 4: Simplify right side
    181,717x = 153,043,699,264
  5. Step 5: Solve for x
    x = 153,043,699,264/181,717
  6. Step 6: Final answer
    x = 842,209.04

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.