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Finding the Fourth Proportional to 13,755.49, 20,633 and 4,395.44

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Solution

The fourth proportional to 13,755.49, 20,633 and 4,395.44 is: 6,593.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.49 : 20,633 = 4,395.44 : x
  2. Step 2: Convert to fraction form
    13,755.49/20,633 = 4,395.44/x
  3. Step 3: Cross multiply
    13,755.49x = 20,633 × 4,395.44
  4. Step 4: Simplify right side
    13,755.49x = 90,691,113.52
  5. Step 5: Solve for x
    x = 90,691,113.52/13,755.49
  6. Step 6: Final answer
    x = 6,593.08

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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.