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Finding the Fourth Proportional to 17,956.85, 26,936.84 and 5,479.69

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Solution

The fourth proportional to 17,956.85, 26,936.84 and 5,479.69 is: 8,220.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,956.85 : 26,936.84 = 5,479.69 : x
  2. Step 2: Convert to fraction form
    17,956.85/26,936.84 = 5,479.69/x
  3. Step 3: Cross multiply
    17,956.85x = 26,936.84 × 5,479.69
  4. Step 4: Simplify right side
    17,956.85x = 147,605,370.70
  5. Step 5: Solve for x
    x = 147,605,370.70/17,956.85
  6. Step 6: Final answer
    x = 8,220.00

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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.