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Finding the Fourth Proportional to 311,081.92, 466,696.69 and 100,719.86

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Solution

The fourth proportional to 311,081.92, 466,696.69 and 100,719.86 is: 151,103.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,081.92 : 466,696.69 = 100,719.86 : x
  2. Step 2: Convert to fraction form
    311,081.92/466,696.69 = 100,719.86/x
  3. Step 3: Cross multiply
    311,081.92x = 466,696.69 × 100,719.86
  4. Step 4: Simplify right side
    311,081.92x = 47,005,622,693.98
  5. Step 5: Solve for x
    x = 47,005,622,693.98/311,081.92
  6. Step 6: Final answer
    x = 151,103.68

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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.