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Finding the Fourth Proportional to 7,661.80, 11,493.78 and 2,467

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Solution

The fourth proportional to 7,661.80, 11,493.78 and 2,467 is: 3,700.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,661.80 : 11,493.78 = 2,467 : x
  2. Step 2: Convert to fraction form
    7,661.80/11,493.78 = 2,467/x
  3. Step 3: Cross multiply
    7,661.80x = 11,493.78 × 2,467
  4. Step 4: Simplify right side
    7,661.80x = 28,355,155.26
  5. Step 5: Solve for x
    x = 28,355,155.26/7,661.80
  6. Step 6: Final answer
    x = 3,700.85

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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.