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Finding the Fourth Proportional to 79,896.80, 119,749.20 and 33,125.60

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Solution

The fourth proportional to 79,896.80, 119,749.20 and 33,125.60 is: 49,648.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,896.80 : 119,749.20 = 33,125.60 : x
  2. Step 2: Convert to fraction form
    79,896.80/119,749.20 = 33,125.60/x
  3. Step 3: Cross multiply
    79,896.80x = 119,749.20 × 33,125.60
  4. Step 4: Simplify right side
    79,896.80x = 3,966,764,099.52
  5. Step 5: Solve for x
    x = 3,966,764,099.52/79,896.80
  6. Step 6: Final answer
    x = 49,648.60

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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.