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Finding the Third Proportional to 938.75 and 1,937.50

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Solution

The third proportional to 938.75 and 1,937.50 is: 3,998.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    938.75 : 1,937.50 = 1,937.50 : x
  2. Step 2: Convert to fraction form
    938.75/1,937.50 = 1,937.50/x
  3. Step 3: Cross multiply
    938.75x = 1,937.50 × 1,937.50
  4. Step 4: Simplify right side
    938.75x = 3,753,906.25
  5. Step 5: Solve for x
    x = 3,753,906.25/938.75
  6. Step 6: Final answer
    x = 3,998.83

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.