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Finding the Fourth Proportional to 381,785.40, 572,940.27 and 132,467.40

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Solution

The fourth proportional to 381,785.40, 572,940.27 and 132,467.40 is: 198,792.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,785.40 : 572,940.27 = 132,467.40 : x
  2. Step 2: Convert to fraction form
    381,785.40/572,940.27 = 132,467.40/x
  3. Step 3: Cross multiply
    381,785.40x = 572,940.27 × 132,467.40
  4. Step 4: Simplify right side
    381,785.40x = 75,895,907,922.20
  5. Step 5: Solve for x
    x = 75,895,907,922.20/381,785.40
  6. Step 6: Final answer
    x = 198,792.06

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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.