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Finding the Fourth Proportional to 7,435, 11,156.82 and 3,331

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Solution

The fourth proportional to 7,435, 11,156.82 and 3,331 is: 4,998.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,435 : 11,156.82 = 3,331 : x
  2. Step 2: Convert to fraction form
    7,435/11,156.82 = 3,331/x
  3. Step 3: Cross multiply
    7,435x = 11,156.82 × 3,331
  4. Step 4: Simplify right side
    7,435x = 37,163,367.42
  5. Step 5: Solve for x
    x = 37,163,367.42/7,435
  6. Step 6: Final answer
    x = 4,998.44

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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.