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Finding the Fourth Proportional to 11,239.61, 16,869.77 and 5,696.82

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Solution

The fourth proportional to 11,239.61, 16,869.77 and 5,696.82 is: 8,550.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,239.61 : 16,869.77 = 5,696.82 : x
  2. Step 2: Convert to fraction form
    11,239.61/16,869.77 = 5,696.82/x
  3. Step 3: Cross multiply
    11,239.61x = 16,869.77 × 5,696.82
  4. Step 4: Simplify right side
    11,239.61x = 96,104,014.65
  5. Step 5: Solve for x
    x = 96,104,014.65/11,239.61
  6. Step 6: Final answer
    x = 8,550.48

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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.