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Finding the Fourth Proportional to 122,979.70, 184,469.55 and 73,213.30

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Solution

The fourth proportional to 122,979.70, 184,469.55 and 73,213.30 is: 109,819.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,979.70 : 184,469.55 = 73,213.30 : x
  2. Step 2: Convert to fraction form
    122,979.70/184,469.55 = 73,213.30/x
  3. Step 3: Cross multiply
    122,979.70x = 184,469.55 × 73,213.30
  4. Step 4: Simplify right side
    122,979.70x = 13,505,624,505.02
  5. Step 5: Solve for x
    x = 13,505,624,505.02/122,979.70
  6. Step 6: Final answer
    x = 109,819.95

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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.