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Finding the Fourth Proportional to 263,279.20, 394,515.60 and 196,405.60

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Solution

The fourth proportional to 263,279.20, 394,515.60 and 196,405.60 is: 294,307.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,279.20 : 394,515.60 = 196,405.60 : x
  2. Step 2: Convert to fraction form
    263,279.20/394,515.60 = 196,405.60/x
  3. Step 3: Cross multiply
    263,279.20x = 394,515.60 × 196,405.60
  4. Step 4: Simplify right side
    263,279.20x = 77,485,073,127.36
  5. Step 5: Solve for x
    x = 77,485,073,127.36/263,279.20
  6. Step 6: Final answer
    x = 294,307.61

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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.