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Finding the Fourth Proportional to 13,199.60, 19,793.60 and 3,963.44

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Solution

The fourth proportional to 13,199.60, 19,793.60 and 3,963.44 is: 5,943.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,199.60 : 19,793.60 = 3,963.44 : x
  2. Step 2: Convert to fraction form
    13,199.60/19,793.60 = 3,963.44/x
  3. Step 3: Cross multiply
    13,199.60x = 19,793.60 × 3,963.44
  4. Step 4: Simplify right side
    13,199.60x = 78,450,745.98
  5. Step 5: Solve for x
    x = 78,450,745.98/13,199.60
  6. Step 6: Final answer
    x = 5,943.42

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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.