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Finding the Fourth Proportional to 11,956.87, 17,934.70 and 3,636.70

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Solution

The fourth proportional to 11,956.87, 17,934.70 and 3,636.70 is: 5,454.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,956.87 : 17,934.70 = 3,636.70 : x
  2. Step 2: Convert to fraction form
    11,956.87/17,934.70 = 3,636.70/x
  3. Step 3: Cross multiply
    11,956.87x = 17,934.70 × 3,636.70
  4. Step 4: Simplify right side
    11,956.87x = 65,223,177.26
  5. Step 5: Solve for x
    x = 65,223,177.26/11,956.87
  6. Step 6: Final answer
    x = 5,454.87

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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.