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Finding the Fourth Proportional to 122,676.60, 183,917.70 and 67,272.60

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Solution

The fourth proportional to 122,676.60, 183,917.70 and 67,272.60 is: 100,855.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,676.60 : 183,917.70 = 67,272.60 : x
  2. Step 2: Convert to fraction form
    122,676.60/183,917.70 = 67,272.60/x
  3. Step 3: Cross multiply
    122,676.60x = 183,917.70 × 67,272.60
  4. Step 4: Simplify right side
    122,676.60x = 12,372,621,865.02
  5. Step 5: Solve for x
    x = 12,372,621,865.02/122,676.60
  6. Step 6: Final answer
    x = 100,855.60

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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.