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Finding the Third Proportional to 17,939.25 and 39,285

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Solution

The third proportional to 17,939.25 and 39,285 is: 86,029.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,939.25 : 39,285 = 39,285 : x
  2. Step 2: Convert to fraction form
    17,939.25/39,285 = 39,285/x
  3. Step 3: Cross multiply
    17,939.25x = 39,285 × 39,285
  4. Step 4: Simplify right side
    17,939.25x = 1,543,311,225
  5. Step 5: Solve for x
    x = 1,543,311,225/17,939.25
  6. Step 6: Final answer
    x = 86,029.86

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.