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Finding the Fourth Proportional to 104,481.40, 156,789.30 and 57,767.80

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Solution

The fourth proportional to 104,481.40, 156,789.30 and 57,767.80 is: 86,688.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,481.40 : 156,789.30 = 57,767.80 : x
  2. Step 2: Convert to fraction form
    104,481.40/156,789.30 = 57,767.80/x
  3. Step 3: Cross multiply
    104,481.40x = 156,789.30 × 57,767.80
  4. Step 4: Simplify right side
    104,481.40x = 9,057,372,924.54
  5. Step 5: Solve for x
    x = 9,057,372,924.54/104,481.40
  6. Step 6: Final answer
    x = 86,688.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.