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Finding the Fourth Proportional to 80,616.44, 120,905.22 and 25,212.44

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Solution

The fourth proportional to 80,616.44, 120,905.22 and 25,212.44 is: 37,812.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,616.44 : 120,905.22 = 25,212.44 : x
  2. Step 2: Convert to fraction form
    80,616.44/120,905.22 = 25,212.44/x
  3. Step 3: Cross multiply
    80,616.44x = 120,905.22 × 25,212.44
  4. Step 4: Simplify right side
    80,616.44x = 3,048,315,604.94
  5. Step 5: Solve for x
    x = 3,048,315,604.94/80,616.44
  6. Step 6: Final answer
    x = 37,812.58

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1.5x scale

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.