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Finding the Fourth Proportional to 263,843.46, 395,726.94 and 86,357.52

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Solution

The fourth proportional to 263,843.46, 395,726.94 and 86,357.52 is: 129,523.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,843.46 : 395,726.94 = 86,357.52 : x
  2. Step 2: Convert to fraction form
    263,843.46/395,726.94 = 86,357.52/x
  3. Step 3: Cross multiply
    263,843.46x = 395,726.94 × 86,357.52
  4. Step 4: Simplify right side
    263,843.46x = 34,173,997,135.59
  5. Step 5: Solve for x
    x = 34,173,997,135.59/263,843.46
  6. Step 6: Final answer
    x = 129,523.76

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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.