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Finding the Fourth Proportional to 71,379.63, 98,511.29 and 41,171.69

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Solution

The fourth proportional to 71,379.63, 98,511.29 and 41,171.69 is: 56,821.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,379.63 : 98,511.29 = 41,171.69 : x
  2. Step 2: Convert to fraction form
    71,379.63/98,511.29 = 41,171.69/x
  3. Step 3: Cross multiply
    71,379.63x = 98,511.29 × 41,171.69
  4. Step 4: Simplify right side
    71,379.63x = 4,055,876,488.19
  5. Step 5: Solve for x
    x = 4,055,876,488.19/71,379.63
  6. Step 6: Final answer
    x = 56,821.20

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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.