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Finding the Fourth Proportional to 9,879.93, 14,819.49 and 3,305.61

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Solution

The fourth proportional to 9,879.93, 14,819.49 and 3,305.61 is: 4,958.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,879.93 : 14,819.49 = 3,305.61 : x
  2. Step 2: Convert to fraction form
    9,879.93/14,819.49 = 3,305.61/x
  3. Step 3: Cross multiply
    9,879.93x = 14,819.49 × 3,305.61
  4. Step 4: Simplify right side
    9,879.93x = 48,987,454.34
  5. Step 5: Solve for x
    x = 48,987,454.34/9,879.93
  6. Step 6: Final answer
    x = 4,958.28

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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.