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Finding the Fourth Proportional to 11,295.81, 16,949.52 and 5,379.41

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Solution

The fourth proportional to 11,295.81, 16,949.52 and 5,379.41 is: 8,071.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,295.81 : 16,949.52 = 5,379.41 : x
  2. Step 2: Convert to fraction form
    11,295.81/16,949.52 = 5,379.41/x
  3. Step 3: Cross multiply
    11,295.81x = 16,949.52 × 5,379.41
  4. Step 4: Simplify right side
    11,295.81x = 91,178,363.28
  5. Step 5: Solve for x
    x = 91,178,363.28/11,295.81
  6. Step 6: Final answer
    x = 8,071.87

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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.