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Finding the Fourth Proportional to 341,481.20, 512,682.60 and 217,065.20

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Solution

The fourth proportional to 341,481.20, 512,682.60 and 217,065.20 is: 325,890.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,481.20 : 512,682.60 = 217,065.20 : x
  2. Step 2: Convert to fraction form
    341,481.20/512,682.60 = 217,065.20/x
  3. Step 3: Cross multiply
    341,481.20x = 512,682.60 × 217,065.20
  4. Step 4: Simplify right side
    341,481.20x = 111,285,551,105.52
  5. Step 5: Solve for x
    x = 111,285,551,105.52/341,481.20
  6. Step 6: Final answer
    x = 325,890.71

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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.