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Finding the Fourth Proportional to 111,291.78, 166,936.19 and 27,051.72

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Solution

The fourth proportional to 111,291.78, 166,936.19 and 27,051.72 is: 40,577.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,291.78 : 166,936.19 = 27,051.72 : x
  2. Step 2: Convert to fraction form
    111,291.78/166,936.19 = 27,051.72/x
  3. Step 3: Cross multiply
    111,291.78x = 166,936.19 × 27,051.72
  4. Step 4: Simplify right side
    111,291.78x = 4,515,910,409.92
  5. Step 5: Solve for x
    x = 4,515,910,409.92/111,291.78
  6. Step 6: Final answer
    x = 40,577.21

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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.