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Finding the Fourth Proportional to 19,295.92, 28,936.26 and 6,813.28

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Solution

The fourth proportional to 19,295.92, 28,936.26 and 6,813.28 is: 10,217.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,295.92 : 28,936.26 = 6,813.28 : x
  2. Step 2: Convert to fraction form
    19,295.92/28,936.26 = 6,813.28/x
  3. Step 3: Cross multiply
    19,295.92x = 28,936.26 × 6,813.28
  4. Step 4: Simplify right side
    19,295.92x = 197,150,841.53
  5. Step 5: Solve for x
    x = 197,150,841.53/19,295.92
  6. Step 6: Final answer
    x = 10,217.23

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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.