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Finding the Fourth Proportional to 2,494.62, 3,742.88 and 763.38

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Solution

The fourth proportional to 2,494.62, 3,742.88 and 763.38 is: 1,145.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,494.62 : 3,742.88 = 763.38 : x
  2. Step 2: Convert to fraction form
    2,494.62/3,742.88 = 763.38/x
  3. Step 3: Cross multiply
    2,494.62x = 3,742.88 × 763.38
  4. Step 4: Simplify right side
    2,494.62x = 2,857,235.92
  5. Step 5: Solve for x
    x = 2,857,235.92/2,494.62
  6. Step 6: Final answer
    x = 1,145.36

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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.