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Finding the Fourth Proportional to 8,367.16, 12,553.78 and 3,173

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Solution

The fourth proportional to 8,367.16, 12,553.78 and 3,173 is: 4,760.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,367.16 : 12,553.78 = 3,173 : x
  2. Step 2: Convert to fraction form
    8,367.16/12,553.78 = 3,173/x
  3. Step 3: Cross multiply
    8,367.16x = 12,553.78 × 3,173
  4. Step 4: Simplify right side
    8,367.16x = 39,833,143.94
  5. Step 5: Solve for x
    x = 39,833,143.94/8,367.16
  6. Step 6: Final answer
    x = 4,760.65

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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.