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Finding the Fourth Proportional to 417,879.97, 576,725.34 and 245,789.73

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Solution

The fourth proportional to 417,879.97, 576,725.34 and 245,789.73 is: 339,219.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,879.97 : 576,725.34 = 245,789.73 : x
  2. Step 2: Convert to fraction form
    417,879.97/576,725.34 = 245,789.73/x
  3. Step 3: Cross multiply
    417,879.97x = 576,725.34 × 245,789.73
  4. Step 4: Simplify right side
    417,879.97x = 141,753,166,524.47
  5. Step 5: Solve for x
    x = 141,753,166,524.47/417,879.97
  6. Step 6: Final answer
    x = 339,219.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.