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Finding the Fourth Proportional to 193,121.01, 289,694.48 and 66,773.57

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Solution

The fourth proportional to 193,121.01, 289,694.48 and 66,773.57 is: 100,164.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,121.01 : 289,694.48 = 66,773.57 : x
  2. Step 2: Convert to fraction form
    193,121.01/289,694.48 = 66,773.57/x
  3. Step 3: Cross multiply
    193,121.01x = 289,694.48 × 66,773.57
  4. Step 4: Simplify right side
    193,121.01x = 19,343,932,856.55
  5. Step 5: Solve for x
    x = 19,343,932,856.55/193,121.01
  6. Step 6: Final answer
    x = 100,164.83

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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.