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Finding the Fourth Proportional to 10,908.97, 16,363.25 and 5,356.42

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Solution

The fourth proportional to 10,908.97, 16,363.25 and 5,356.42 is: 8,034.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,908.97 : 16,363.25 = 5,356.42 : x
  2. Step 2: Convert to fraction form
    10,908.97/16,363.25 = 5,356.42/x
  3. Step 3: Cross multiply
    10,908.97x = 16,363.25 × 5,356.42
  4. Step 4: Simplify right side
    10,908.97x = 87,648,330.97
  5. Step 5: Solve for x
    x = 87,648,330.97/10,908.97
  6. Step 6: Final answer
    x = 8,034.52

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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.