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Finding the Fourth Proportional to 5,318.62, 7,974.24 and 2,355.45

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Solution

The fourth proportional to 5,318.62, 7,974.24 and 2,355.45 is: 3,531.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.62 : 7,974.24 = 2,355.45 : x
  2. Step 2: Convert to fraction form
    5,318.62/7,974.24 = 2,355.45/x
  3. Step 3: Cross multiply
    5,318.62x = 7,974.24 × 2,355.45
  4. Step 4: Simplify right side
    5,318.62x = 18,782,940.49
  5. Step 5: Solve for x
    x = 18,782,940.49/5,318.62
  6. Step 6: Final answer
    x = 3,531.54

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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.