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Finding the Fourth Proportional to 401,355.94, 553,876.56 and 220,067.41

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Solution

The fourth proportional to 401,355.94, 553,876.56 and 220,067.41 is: 303,695.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,355.94 : 553,876.56 = 220,067.41 : x
  2. Step 2: Convert to fraction form
    401,355.94/553,876.56 = 220,067.41/x
  3. Step 3: Cross multiply
    401,355.94x = 553,876.56 × 220,067.41
  4. Step 4: Simplify right side
    401,355.94x = 121,890,180,018.91
  5. Step 5: Solve for x
    x = 121,890,180,018.91/401,355.94
  6. Step 6: Final answer
    x = 303,695.97

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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.