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Finding the Fourth Proportional to 111,218.55, 166,827.83 and 92,519.70

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Solution

The fourth proportional to 111,218.55, 166,827.83 and 92,519.70 is: 138,779.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,218.55 : 166,827.83 = 92,519.70 : x
  2. Step 2: Convert to fraction form
    111,218.55/166,827.83 = 92,519.70/x
  3. Step 3: Cross multiply
    111,218.55x = 166,827.83 × 92,519.70
  4. Step 4: Simplify right side
    111,218.55x = 15,434,860,320.65
  5. Step 5: Solve for x
    x = 15,434,860,320.65/111,218.55
  6. Step 6: Final answer
    x = 138,779.55

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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.