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Finding the Third Proportional to 39,198 and 84,288

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Solution

The third proportional to 39,198 and 84,288 is: 181,245.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,198 : 84,288 = 84,288 : x
  2. Step 2: Convert to fraction form
    39,198/84,288 = 84,288/x
  3. Step 3: Cross multiply
    39,198x = 84,288 × 84,288
  4. Step 4: Simplify right side
    39,198x = 7,104,466,944
  5. Step 5: Solve for x
    x = 7,104,466,944/39,198
  6. Step 6: Final answer
    x = 181,245.65

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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.