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Finding the Fourth Proportional to 11,153.52, 16,728.66 and 3,755.52

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Solution

The fourth proportional to 11,153.52, 16,728.66 and 3,755.52 is: 5,632.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.52 : 16,728.66 = 3,755.52 : x
  2. Step 2: Convert to fraction form
    11,153.52/16,728.66 = 3,755.52/x
  3. Step 3: Cross multiply
    11,153.52x = 16,728.66 × 3,755.52
  4. Step 4: Simplify right side
    11,153.52x = 62,824,817.20
  5. Step 5: Solve for x
    x = 62,824,817.20/11,153.52
  6. Step 6: Final answer
    x = 5,632.73

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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.