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Finding the Fourth Proportional to 16,976.20, 25,458.20 and 5,879.90

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Solution

The fourth proportional to 16,976.20, 25,458.20 and 5,879.90 is: 8,817.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,976.20 : 25,458.20 = 5,879.90 : x
  2. Step 2: Convert to fraction form
    16,976.20/25,458.20 = 5,879.90/x
  3. Step 3: Cross multiply
    16,976.20x = 25,458.20 × 5,879.90
  4. Step 4: Simplify right side
    16,976.20x = 149,691,670.18
  5. Step 5: Solve for x
    x = 149,691,670.18/16,976.20
  6. Step 6: Final answer
    x = 8,817.74

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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.