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Finding the Fourth Proportional to 19,217.84, 28,822.24 and 7,367.44

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Solution

The fourth proportional to 19,217.84, 28,822.24 and 7,367.44 is: 11,049.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,217.84 : 28,822.24 = 7,367.44 : x
  2. Step 2: Convert to fraction form
    19,217.84/28,822.24 = 7,367.44/x
  3. Step 3: Cross multiply
    19,217.84x = 28,822.24 × 7,367.44
  4. Step 4: Simplify right side
    19,217.84x = 212,346,123.87
  5. Step 5: Solve for x
    x = 212,346,123.87/19,217.84
  6. Step 6: Final answer
    x = 11,049.43

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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.