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Finding the Fourth Proportional to 263,241.60, 394,516.80 and 105,340.80

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Solution

The fourth proportional to 263,241.60, 394,516.80 and 105,340.80 is: 157,872.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,241.60 : 394,516.80 = 105,340.80 : x
  2. Step 2: Convert to fraction form
    263,241.60/394,516.80 = 105,340.80/x
  3. Step 3: Cross multiply
    263,241.60x = 394,516.80 × 105,340.80
  4. Step 4: Simplify right side
    263,241.60x = 41,558,715,325.44
  5. Step 5: Solve for x
    x = 41,558,715,325.44/263,241.60
  6. Step 6: Final answer
    x = 157,872.90

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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.