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Finding the Third Proportional to 998 and 1,888

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Solution

The third proportional to 998 and 1,888 is: 3,571.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    998 : 1,888 = 1,888 : x
  2. Step 2: Convert to fraction form
    998/1,888 = 1,888/x
  3. Step 3: Cross multiply
    998x = 1,888 × 1,888
  4. Step 4: Simplify right side
    998x = 3,564,544
  5. Step 5: Solve for x
    x = 3,564,544/998
  6. Step 6: Final answer
    x = 3,571.69

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Why These Related Problems?

These problems maintain the same ratio (1.89) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.