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Finding the Fourth Proportional to 11,879.38, 16,392.84 and 6,573.88

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Solution

The fourth proportional to 11,879.38, 16,392.84 and 6,573.88 is: 9,071.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.38 : 16,392.84 = 6,573.88 : x
  2. Step 2: Convert to fraction form
    11,879.38/16,392.84 = 6,573.88/x
  3. Step 3: Cross multiply
    11,879.38x = 16,392.84 × 6,573.88
  4. Step 4: Simplify right side
    11,879.38x = 107,764,563.02
  5. Step 5: Solve for x
    x = 107,764,563.02/11,879.38
  6. Step 6: Final answer
    x = 9,071.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.