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Finding the Fourth Proportional to 361,107.70, 541,661.55 and 256,131.70

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Solution

The fourth proportional to 361,107.70, 541,661.55 and 256,131.70 is: 384,197.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,107.70 : 541,661.55 = 256,131.70 : x
  2. Step 2: Convert to fraction form
    361,107.70/541,661.55 = 256,131.70/x
  3. Step 3: Cross multiply
    361,107.70x = 541,661.55 × 256,131.70
  4. Step 4: Simplify right side
    361,107.70x = 138,736,693,626.14
  5. Step 5: Solve for x
    x = 138,736,693,626.14/361,107.70
  6. Step 6: Final answer
    x = 384,197.55

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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.