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Finding the Fourth Proportional to 11,203.79, 16,816.05 and 5,661.03

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Solution

The fourth proportional to 11,203.79, 16,816.05 and 5,661.03 is: 8,496.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,203.79 : 16,816.05 = 5,661.03 : x
  2. Step 2: Convert to fraction form
    11,203.79/16,816.05 = 5,661.03/x
  3. Step 3: Cross multiply
    11,203.79x = 16,816.05 × 5,661.03
  4. Step 4: Simplify right side
    11,203.79x = 95,196,163.53
  5. Step 5: Solve for x
    x = 95,196,163.53/11,203.79
  6. Step 6: Final answer
    x = 8,496.78

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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.