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Finding the Fourth Proportional to 263,450.61, 395,249.90 and 105,789.78

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Solution

The fourth proportional to 263,450.61, 395,249.90 and 105,789.78 is: 158,714.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,450.61 : 395,249.90 = 105,789.78 : x
  2. Step 2: Convert to fraction form
    263,450.61/395,249.90 = 105,789.78/x
  3. Step 3: Cross multiply
    263,450.61x = 395,249.90 × 105,789.78
  4. Step 4: Simplify right side
    263,450.61x = 41,813,399,437.07
  5. Step 5: Solve for x
    x = 41,813,399,437.07/263,450.61
  6. Step 6: Final answer
    x = 158,714.38

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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.