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Finding the Fourth Proportional to 33,687.54, 50,509.71 and 13,979.70

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Solution

The fourth proportional to 33,687.54, 50,509.71 and 13,979.70 is: 20,960.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,687.54 : 50,509.71 = 13,979.70 : x
  2. Step 2: Convert to fraction form
    33,687.54/50,509.71 = 13,979.70/x
  3. Step 3: Cross multiply
    33,687.54x = 50,509.71 × 13,979.70
  4. Step 4: Simplify right side
    33,687.54x = 706,110,592.89
  5. Step 5: Solve for x
    x = 706,110,592.89/33,687.54
  6. Step 6: Final answer
    x = 20,960.59

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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.