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Finding the Fourth Proportional to 13,596.66, 20,375.55 and 7,741.17

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Solution

The fourth proportional to 13,596.66, 20,375.55 and 7,741.17 is: 11,600.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,596.66 : 20,375.55 = 7,741.17 : x
  2. Step 2: Convert to fraction form
    13,596.66/20,375.55 = 7,741.17/x
  3. Step 3: Cross multiply
    13,596.66x = 20,375.55 × 7,741.17
  4. Step 4: Simplify right side
    13,596.66x = 157,730,596.39
  5. Step 5: Solve for x
    x = 157,730,596.39/13,596.66
  6. Step 6: Final answer
    x = 11,600.69

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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.