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Finding the Fourth Proportional to 361,107.20, 541,660.80 and 256,131.20

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Solution

The fourth proportional to 361,107.20, 541,660.80 and 256,131.20 is: 384,196.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,107.20 : 541,660.80 = 256,131.20 : x
  2. Step 2: Convert to fraction form
    361,107.20/541,660.80 = 256,131.20/x
  3. Step 3: Cross multiply
    361,107.20x = 541,660.80 × 256,131.20
  4. Step 4: Simplify right side
    361,107.20x = 138,736,230,696.96
  5. Step 5: Solve for x
    x = 138,736,230,696.96/361,107.20
  6. Step 6: Final answer
    x = 384,196.80

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1.5x scale

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.