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Finding the Fourth Proportional to 179,231.76, 268,659.60 and 66,866.64

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Solution

The fourth proportional to 179,231.76, 268,659.60 and 66,866.64 is: 100,229.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,231.76 : 268,659.60 = 66,866.64 : x
  2. Step 2: Convert to fraction form
    179,231.76/268,659.60 = 66,866.64/x
  3. Step 3: Cross multiply
    179,231.76x = 268,659.60 × 66,866.64
  4. Step 4: Simplify right side
    179,231.76x = 17,964,364,755.74
  5. Step 5: Solve for x
    x = 17,964,364,755.74/179,231.76
  6. Step 6: Final answer
    x = 100,229.81

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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.