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Finding the Fourth Proportional to 7,326.75, 10,990.18 and 2,943.24

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Solution

The fourth proportional to 7,326.75, 10,990.18 and 2,943.24 is: 4,414.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,326.75 : 10,990.18 = 2,943.24 : x
  2. Step 2: Convert to fraction form
    7,326.75/10,990.18 = 2,943.24/x
  3. Step 3: Cross multiply
    7,326.75x = 10,990.18 × 2,943.24
  4. Step 4: Simplify right side
    7,326.75x = 32,346,699.85
  5. Step 5: Solve for x
    x = 32,346,699.85/7,326.75
  6. Step 6: Final answer
    x = 4,414.87

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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.