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Finding the Third Proportional to 198,016.75 and 406,530.75

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Solution

The third proportional to 198,016.75 and 406,530.75 is: 834,612.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,016.75 : 406,530.75 = 406,530.75 : x
  2. Step 2: Convert to fraction form
    198,016.75/406,530.75 = 406,530.75/x
  3. Step 3: Cross multiply
    198,016.75x = 406,530.75 × 406,530.75
  4. Step 4: Simplify right side
    198,016.75x = 165,267,250,695.56
  5. Step 5: Solve for x
    x = 165,267,250,695.56/198,016.75
  6. Step 6: Final answer
    x = 834,612.48

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.