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Finding the Third Proportional to 2,237 and 3,988

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Solution

The third proportional to 2,237 and 3,988 is: 7,109.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,237 : 3,988 = 3,988 : x
  2. Step 2: Convert to fraction form
    2,237/3,988 = 3,988/x
  3. Step 3: Cross multiply
    2,237x = 3,988 × 3,988
  4. Step 4: Simplify right side
    2,237x = 15,904,144
  5. Step 5: Solve for x
    x = 15,904,144/2,237
  6. Step 6: Final answer
    x = 7,109.59

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.