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Finding the Third Proportional to 39,016.50 and 84,189

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Solution

The third proportional to 39,016.50 and 84,189 is: 181,661.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,016.50 : 84,189 = 84,189 : x
  2. Step 2: Convert to fraction form
    39,016.50/84,189 = 84,189/x
  3. Step 3: Cross multiply
    39,016.50x = 84,189 × 84,189
  4. Step 4: Simplify right side
    39,016.50x = 7,087,787,721
  5. Step 5: Solve for x
    x = 7,087,787,721/39,016.50
  6. Step 6: Final answer
    x = 181,661.29

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.