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Finding the Third Proportional to 18,267.50 and 39,917

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Solution

The third proportional to 18,267.50 and 39,917 is: 87,224.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,267.50 : 39,917 = 39,917 : x
  2. Step 2: Convert to fraction form
    18,267.50/39,917 = 39,917/x
  3. Step 3: Cross multiply
    18,267.50x = 39,917 × 39,917
  4. Step 4: Simplify right side
    18,267.50x = 1,593,366,889
  5. Step 5: Solve for x
    x = 1,593,366,889/18,267.50
  6. Step 6: Final answer
    x = 87,224.14

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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.