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Finding the Fourth Proportional to 68,879.57, 103,083.43 and 47,843.33

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Solution

The fourth proportional to 68,879.57, 103,083.43 and 47,843.33 is: 71,601.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,879.57 : 103,083.43 = 47,843.33 : x
  2. Step 2: Convert to fraction form
    68,879.57/103,083.43 = 47,843.33/x
  3. Step 3: Cross multiply
    68,879.57x = 103,083.43 × 47,843.33
  4. Step 4: Simplify right side
    68,879.57x = 4,931,854,559.02
  5. Step 5: Solve for x
    x = 4,931,854,559.02/68,879.57
  6. Step 6: Final answer
    x = 71,601.12

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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.