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Finding the Fourth Proportional to 111,691.44, 154,027.80 and 73,383.12

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Solution

The fourth proportional to 111,691.44, 154,027.80 and 73,383.12 is: 101,198.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,691.44 : 154,027.80 = 73,383.12 : x
  2. Step 2: Convert to fraction form
    111,691.44/154,027.80 = 73,383.12/x
  3. Step 3: Cross multiply
    111,691.44x = 154,027.80 × 73,383.12
  4. Step 4: Simplify right side
    111,691.44x = 11,303,040,530.74
  5. Step 5: Solve for x
    x = 11,303,040,530.74/111,691.44
  6. Step 6: Final answer
    x = 101,198.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.