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Finding the Fourth Proportional to 1,616.93, 2,230.85 and 996.29

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Solution

The fourth proportional to 1,616.93, 2,230.85 and 996.29 is: 1,374.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,616.93 : 2,230.85 = 996.29 : x
  2. Step 2: Convert to fraction form
    1,616.93/2,230.85 = 996.29/x
  3. Step 3: Cross multiply
    1,616.93x = 2,230.85 × 996.29
  4. Step 4: Simplify right side
    1,616.93x = 2,222,568.57
  5. Step 5: Solve for x
    x = 2,222,568.57/1,616.93
  6. Step 6: Final answer
    x = 1,374.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.