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Finding the Fourth Proportional to 4,880.98, 7,321.23 and 3,913.27

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Solution

The fourth proportional to 4,880.98, 7,321.23 and 3,913.27 is: 5,869.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,880.98 : 7,321.23 = 3,913.27 : x
  2. Step 2: Convert to fraction form
    4,880.98/7,321.23 = 3,913.27/x
  3. Step 3: Cross multiply
    4,880.98x = 7,321.23 × 3,913.27
  4. Step 4: Simplify right side
    4,880.98x = 28,649,949.72
  5. Step 5: Solve for x
    x = 28,649,949.72/4,880.98
  6. Step 6: Final answer
    x = 5,869.71

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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.