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Finding the Fourth Proportional to 7,086.38, 9,777.39 and 3,941.96

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Solution

The fourth proportional to 7,086.38, 9,777.39 and 3,941.96 is: 5,438.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,086.38 : 9,777.39 = 3,941.96 : x
  2. Step 2: Convert to fraction form
    7,086.38/9,777.39 = 3,941.96/x
  3. Step 3: Cross multiply
    7,086.38x = 9,777.39 × 3,941.96
  4. Step 4: Simplify right side
    7,086.38x = 38,542,080.28
  5. Step 5: Solve for x
    x = 38,542,080.28/7,086.38
  6. Step 6: Final answer
    x = 5,438.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.