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Finding the Third Proportional to 925 and 1,988

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Solution

The third proportional to 925 and 1,988 is: 4,272.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    925 : 1,988 = 1,988 : x
  2. Step 2: Convert to fraction form
    925/1,988 = 1,988/x
  3. Step 3: Cross multiply
    925x = 1,988 × 1,988
  4. Step 4: Simplify right side
    925x = 3,952,144
  5. Step 5: Solve for x
    x = 3,952,144/925
  6. Step 6: Final answer
    x = 4,272.59

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.