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Finding the Fourth Proportional to 36,479.90, 54,696.78 and 15,408.98

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Solution

The fourth proportional to 36,479.90, 54,696.78 and 15,408.98 is: 23,103.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,479.90 : 54,696.78 = 15,408.98 : x
  2. Step 2: Convert to fraction form
    36,479.90/54,696.78 = 15,408.98/x
  3. Step 3: Cross multiply
    36,479.90x = 54,696.78 × 15,408.98
  4. Step 4: Simplify right side
    36,479.90x = 842,821,589.08
  5. Step 5: Solve for x
    x = 842,821,589.08/36,479.90
  6. Step 6: Final answer
    x = 23,103.73

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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.