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Finding the Fourth Proportional to 1,162.98, 1,743.92 and 676.16

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Solution

The fourth proportional to 1,162.98, 1,743.92 and 676.16 is: 1,013.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,162.98 : 1,743.92 = 676.16 : x
  2. Step 2: Convert to fraction form
    1,162.98/1,743.92 = 676.16/x
  3. Step 3: Cross multiply
    1,162.98x = 1,743.92 × 676.16
  4. Step 4: Simplify right side
    1,162.98x = 1,179,168.95
  5. Step 5: Solve for x
    x = 1,179,168.95/1,162.98
  6. Step 6: Final answer
    x = 1,013.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.