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Finding the Fourth Proportional to 8,608.55, 12,880.22 and 5,100.44

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Solution

The fourth proportional to 8,608.55, 12,880.22 and 5,100.44 is: 7,631.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,608.55 : 12,880.22 = 5,100.44 : x
  2. Step 2: Convert to fraction form
    8,608.55/12,880.22 = 5,100.44/x
  3. Step 3: Cross multiply
    8,608.55x = 12,880.22 × 5,100.44
  4. Step 4: Simplify right side
    8,608.55x = 65,694,699.39
  5. Step 5: Solve for x
    x = 65,694,699.39/8,608.55
  6. Step 6: Final answer
    x = 7,631.34

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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.