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Finding the Fourth Proportional to 3,578.69, 5,367.11 and 2,408.03

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Solution

The fourth proportional to 3,578.69, 5,367.11 and 2,408.03 is: 3,611.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.69 : 5,367.11 = 2,408.03 : x
  2. Step 2: Convert to fraction form
    3,578.69/5,367.11 = 2,408.03/x
  3. Step 3: Cross multiply
    3,578.69x = 5,367.11 × 2,408.03
  4. Step 4: Simplify right side
    3,578.69x = 12,924,161.89
  5. Step 5: Solve for x
    x = 12,924,161.89/3,578.69
  6. Step 6: Final answer
    x = 3,611.43

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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.