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Finding the Fourth Proportional to 79,785.60, 119,635.20 and 33,043.20

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Solution

The fourth proportional to 79,785.60, 119,635.20 and 33,043.20 is: 49,546.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,785.60 : 119,635.20 = 33,043.20 : x
  2. Step 2: Convert to fraction form
    79,785.60/119,635.20 = 33,043.20/x
  3. Step 3: Cross multiply
    79,785.60x = 119,635.20 × 33,043.20
  4. Step 4: Simplify right side
    79,785.60x = 3,953,129,840.64
  5. Step 5: Solve for x
    x = 3,953,129,840.64/79,785.60
  6. Step 6: Final answer
    x = 49,546.91

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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.