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Finding the Fourth Proportional to 341,574.80, 512,362.20 and 131,217.80

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Solution

The fourth proportional to 341,574.80, 512,362.20 and 131,217.80 is: 196,826.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,574.80 : 512,362.20 = 131,217.80 : x
  2. Step 2: Convert to fraction form
    341,574.80/512,362.20 = 131,217.80/x
  3. Step 3: Cross multiply
    341,574.80x = 512,362.20 × 131,217.80
  4. Step 4: Simplify right side
    341,574.80x = 67,231,040,687.16
  5. Step 5: Solve for x
    x = 67,231,040,687.16/341,574.80
  6. Step 6: Final answer
    x = 196,826.70

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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.