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Finding the Third Proportional to 938.50 and 1,937

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Solution

The third proportional to 938.50 and 1,937 is: 3,997.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    938.50 : 1,937 = 1,937 : x
  2. Step 2: Convert to fraction form
    938.50/1,937 = 1,937/x
  3. Step 3: Cross multiply
    938.50x = 1,937 × 1,937
  4. Step 4: Simplify right side
    938.50x = 3,751,969
  5. Step 5: Solve for x
    x = 3,751,969/938.50
  6. Step 6: Final answer
    x = 3,997.84

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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.