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Finding the Fourth Proportional to 75,879.86, 104,616.92 and 62,217.61

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Solution

The fourth proportional to 75,879.86, 104,616.92 and 62,217.61 is: 85,780.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,879.86 : 104,616.92 = 62,217.61 : x
  2. Step 2: Convert to fraction form
    75,879.86/104,616.92 = 62,217.61/x
  3. Step 3: Cross multiply
    75,879.86x = 104,616.92 × 62,217.61
  4. Step 4: Simplify right side
    75,879.86x = 6,509,014,204.88
  5. Step 5: Solve for x
    x = 6,509,014,204.88/75,879.86
  6. Step 6: Final answer
    x = 85,780.52

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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.