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Finding the Fourth Proportional to 33,107.20, 49,660.80 and 12,326.40

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Solution

The fourth proportional to 33,107.20, 49,660.80 and 12,326.40 is: 18,489.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,107.20 : 49,660.80 = 12,326.40 : x
  2. Step 2: Convert to fraction form
    33,107.20/49,660.80 = 12,326.40/x
  3. Step 3: Cross multiply
    33,107.20x = 49,660.80 × 12,326.40
  4. Step 4: Simplify right side
    33,107.20x = 612,138,885.12
  5. Step 5: Solve for x
    x = 612,138,885.12/33,107.20
  6. Step 6: Final answer
    x = 18,489.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.