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Finding the Fourth Proportional to 19,363, 29,049.36 and 5,512

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Solution

The fourth proportional to 19,363, 29,049.36 and 5,512 is: 8,269.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,363 : 29,049.36 = 5,512 : x
  2. Step 2: Convert to fraction form
    19,363/29,049.36 = 5,512/x
  3. Step 3: Cross multiply
    19,363x = 29,049.36 × 5,512
  4. Step 4: Simplify right side
    19,363x = 160,120,072.32
  5. Step 5: Solve for x
    x = 160,120,072.32/19,363
  6. Step 6: Final answer
    x = 8,269.38

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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.