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Finding the Fourth Proportional to 111,326.82, 166,596 and 69,226.70

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Solution

The fourth proportional to 111,326.82, 166,596 and 69,226.70 is: 103,594.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,326.82 : 166,596 = 69,226.70 : x
  2. Step 2: Convert to fraction form
    111,326.82/166,596 = 69,226.70/x
  3. Step 3: Cross multiply
    111,326.82x = 166,596 × 69,226.70
  4. Step 4: Simplify right side
    111,326.82x = 11,532,891,313.20
  5. Step 5: Solve for x
    x = 11,532,891,313.20/111,326.82
  6. Step 6: Final answer
    x = 103,594.90

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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.