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Finding the Fourth Proportional to 5,676.62, 7,834.22 and 3,158.66

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Solution

The fourth proportional to 5,676.62, 7,834.22 and 3,158.66 is: 4,359.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,676.62 : 7,834.22 = 3,158.66 : x
  2. Step 2: Convert to fraction form
    5,676.62/7,834.22 = 3,158.66/x
  3. Step 3: Cross multiply
    5,676.62x = 7,834.22 × 3,158.66
  4. Step 4: Simplify right side
    5,676.62x = 24,745,637.35
  5. Step 5: Solve for x
    x = 24,745,637.35/5,676.62
  6. Step 6: Final answer
    x = 4,359.22

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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.