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Finding the Fourth Proportional to 11,755.02, 17,620.59 and 7,375.53

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Solution

The fourth proportional to 11,755.02, 17,620.59 and 7,375.53 is: 11,055.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,755.02 : 17,620.59 = 7,375.53 : x
  2. Step 2: Convert to fraction form
    11,755.02/17,620.59 = 7,375.53/x
  3. Step 3: Cross multiply
    11,755.02x = 17,620.59 × 7,375.53
  4. Step 4: Simplify right side
    11,755.02x = 129,961,190.16
  5. Step 5: Solve for x
    x = 129,961,190.16/11,755.02
  6. Step 6: Final answer
    x = 11,055.80

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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.