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Finding the Fourth Proportional to 104,620.60, 144,377.86 and 56,874.97

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Solution

The fourth proportional to 104,620.60, 144,377.86 and 56,874.97 is: 78,488.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,620.60 : 144,377.86 = 56,874.97 : x
  2. Step 2: Convert to fraction form
    104,620.60/144,377.86 = 56,874.97/x
  3. Step 3: Cross multiply
    104,620.60x = 144,377.86 × 56,874.97
  4. Step 4: Simplify right side
    104,620.60x = 8,211,486,456.16
  5. Step 5: Solve for x
    x = 8,211,486,456.16/104,620.60
  6. Step 6: Final answer
    x = 78,488.24

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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.