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Finding the Fourth Proportional to 263,282.20, 394,808.10 and 105,458.20

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Solution

The fourth proportional to 263,282.20, 394,808.10 and 105,458.20 is: 158,141.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,282.20 : 394,808.10 = 105,458.20 : x
  2. Step 2: Convert to fraction form
    263,282.20/394,808.10 = 105,458.20/x
  3. Step 3: Cross multiply
    263,282.20x = 394,808.10 × 105,458.20
  4. Step 4: Simplify right side
    263,282.20x = 41,635,751,571.42
  5. Step 5: Solve for x
    x = 41,635,751,571.42/263,282.20
  6. Step 6: Final answer
    x = 158,141.16

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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.