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Finding the Fourth Proportional to 33,193.30, 49,789.95 and 20,905.30

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Solution

The fourth proportional to 33,193.30, 49,789.95 and 20,905.30 is: 31,357.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,193.30 : 49,789.95 = 20,905.30 : x
  2. Step 2: Convert to fraction form
    33,193.30/49,789.95 = 20,905.30/x
  3. Step 3: Cross multiply
    33,193.30x = 49,789.95 × 20,905.30
  4. Step 4: Simplify right side
    33,193.30x = 1,040,873,841.74
  5. Step 5: Solve for x
    x = 1,040,873,841.74/33,193.30
  6. Step 6: Final answer
    x = 31,357.95

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Similar ratio
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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.