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Finding the Third Proportional to 197,934 and 415,308

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Solution

The third proportional to 197,934 and 415,308 is: 871,405.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,934 : 415,308 = 415,308 : x
  2. Step 2: Convert to fraction form
    197,934/415,308 = 415,308/x
  3. Step 3: Cross multiply
    197,934x = 415,308 × 415,308
  4. Step 4: Simplify right side
    197,934x = 172,480,734,864
  5. Step 5: Solve for x
    x = 172,480,734,864/197,934
  6. Step 6: Final answer
    x = 871,405.29

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.