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Finding the Fourth Proportional to 68,879.41, 95,029.14 and 45,019.85

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Solution

The fourth proportional to 68,879.41, 95,029.14 and 45,019.85 is: 62,111.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,879.41 : 95,029.14 = 45,019.85 : x
  2. Step 2: Convert to fraction form
    68,879.41/95,029.14 = 45,019.85/x
  3. Step 3: Cross multiply
    68,879.41x = 95,029.14 × 45,019.85
  4. Step 4: Simplify right side
    68,879.41x = 4,278,197,628.43
  5. Step 5: Solve for x
    x = 4,278,197,628.43/68,879.41
  6. Step 6: Final answer
    x = 62,111.42

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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.