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Finding the Fourth Proportional to 17,956.61, 26,936.45 and 5,479.44

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Solution

The fourth proportional to 17,956.61, 26,936.45 and 5,479.44 is: 8,219.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,956.61 : 26,936.45 = 5,479.44 : x
  2. Step 2: Convert to fraction form
    17,956.61/26,936.45 = 5,479.44/x
  3. Step 3: Cross multiply
    17,956.61x = 26,936.45 × 5,479.44
  4. Step 4: Simplify right side
    17,956.61x = 147,596,661.59
  5. Step 5: Solve for x
    x = 147,596,661.59/17,956.61
  6. Step 6: Final answer
    x = 8,219.63

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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.