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Finding the Fourth Proportional to 29,815.20, 44,751.60 and 15,040.80

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Solution

The fourth proportional to 29,815.20, 44,751.60 and 15,040.80 is: 22,575.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,815.20 : 44,751.60 = 15,040.80 : x
  2. Step 2: Convert to fraction form
    29,815.20/44,751.60 = 15,040.80/x
  3. Step 3: Cross multiply
    29,815.20x = 44,751.60 × 15,040.80
  4. Step 4: Simplify right side
    29,815.20x = 673,099,865.28
  5. Step 5: Solve for x
    x = 673,099,865.28/29,815.20
  6. Step 6: Final answer
    x = 22,575.73

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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.