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Finding the Fourth Proportional to 193,326.38, 289,920.38 and 66,932.70

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Solution

The fourth proportional to 193,326.38, 289,920.38 and 66,932.70 is: 100,375.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,326.38 : 289,920.38 = 66,932.70 : x
  2. Step 2: Convert to fraction form
    193,326.38/289,920.38 = 66,932.70/x
  3. Step 3: Cross multiply
    193,326.38x = 289,920.38 × 66,932.70
  4. Step 4: Simplify right side
    193,326.38x = 19,405,152,773.06
  5. Step 5: Solve for x
    x = 19,405,152,773.06/193,326.38
  6. Step 6: Final answer
    x = 100,375.09

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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.