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Finding the Fourth Proportional to 33,123.88, 49,689.04 and 12,069.64

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Solution

The fourth proportional to 33,123.88, 49,689.04 and 12,069.64 is: 18,105.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,123.88 : 49,689.04 = 12,069.64 : x
  2. Step 2: Convert to fraction form
    33,123.88/49,689.04 = 12,069.64/x
  3. Step 3: Cross multiply
    33,123.88x = 49,689.04 × 12,069.64
  4. Step 4: Simplify right side
    33,123.88x = 599,728,824.75
  5. Step 5: Solve for x
    x = 599,728,824.75/33,123.88
  6. Step 6: Final answer
    x = 18,105.63

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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.