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Finding the Third Proportional to 874 and 998

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Solution

The third proportional to 874 and 998 is: 1,139.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    874 : 998 = 998 : x
  2. Step 2: Convert to fraction form
    874/998 = 998/x
  3. Step 3: Cross multiply
    874x = 998 × 998
  4. Step 4: Simplify right side
    874x = 996,004
  5. Step 5: Solve for x
    x = 996,004/874
  6. Step 6: Final answer
    x = 1,139.59

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.