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Finding the Fourth Proportional to 104,803.92, 144,605.79 and 87,876.54

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Solution

The fourth proportional to 104,803.92, 144,605.79 and 87,876.54 is: 121,249.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,803.92 : 144,605.79 = 87,876.54 : x
  2. Step 2: Convert to fraction form
    104,803.92/144,605.79 = 87,876.54/x
  3. Step 3: Cross multiply
    104,803.92x = 144,605.79 × 87,876.54
  4. Step 4: Simplify right side
    104,803.92x = 12,707,456,489.17
  5. Step 5: Solve for x
    x = 12,707,456,489.17/104,803.92
  6. Step 6: Final answer
    x = 121,249.82

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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.