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Finding the Fourth Proportional to 104,498.78, 144,211.16 and 61,481.30

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Solution

The fourth proportional to 104,498.78, 144,211.16 and 61,481.30 is: 84,845.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,498.78 : 144,211.16 = 61,481.30 : x
  2. Step 2: Convert to fraction form
    104,498.78/144,211.16 = 61,481.30/x
  3. Step 3: Cross multiply
    104,498.78x = 144,211.16 × 61,481.30
  4. Step 4: Simplify right side
    104,498.78x = 8,866,289,591.31
  5. Step 5: Solve for x
    x = 8,866,289,591.31/104,498.78
  6. Step 6: Final answer
    x = 84,845.87

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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.