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Finding the Fourth Proportional to 417,879.66, 576,724.92 and 245,789.41

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Solution

The fourth proportional to 417,879.66, 576,724.92 and 245,789.41 is: 339,219.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,879.66 : 576,724.92 = 245,789.41 : x
  2. Step 2: Convert to fraction form
    417,879.66/576,724.92 = 245,789.41/x
  3. Step 3: Cross multiply
    417,879.66x = 576,724.92 × 245,789.41
  4. Step 4: Simplify right side
    417,879.66x = 141,752,877,819.10
  5. Step 5: Solve for x
    x = 141,752,877,819.10/417,879.66
  6. Step 6: Final answer
    x = 339,219.38

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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.