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Finding the Fourth Proportional to 8,506.67, 12,761.12 and 2,960.43

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Solution

The fourth proportional to 8,506.67, 12,761.12 and 2,960.43 is: 4,441.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,506.67 : 12,761.12 = 2,960.43 : x
  2. Step 2: Convert to fraction form
    8,506.67/12,761.12 = 2,960.43/x
  3. Step 3: Cross multiply
    8,506.67x = 12,761.12 × 2,960.43
  4. Step 4: Simplify right side
    8,506.67x = 37,778,387.68
  5. Step 5: Solve for x
    x = 37,778,387.68/8,506.67
  6. Step 6: Final answer
    x = 4,441.03

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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.