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Finding the Fourth Proportional to 111,091.60, 166,661.70 and 54,958.60

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Solution

The fourth proportional to 111,091.60, 166,661.70 and 54,958.60 is: 82,449.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,091.60 : 166,661.70 = 54,958.60 : x
  2. Step 2: Convert to fraction form
    111,091.60/166,661.70 = 54,958.60/x
  3. Step 3: Cross multiply
    111,091.60x = 166,661.70 × 54,958.60
  4. Step 4: Simplify right side
    111,091.60x = 9,159,493,705.62
  5. Step 5: Solve for x
    x = 9,159,493,705.62/111,091.60
  6. Step 6: Final answer
    x = 82,449.92

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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.