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Finding the Fourth Proportional to 7,372.56, 11,057.12 and 4,245.92

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Solution

The fourth proportional to 7,372.56, 11,057.12 and 4,245.92 is: 6,367.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,372.56 : 11,057.12 = 4,245.92 : x
  2. Step 2: Convert to fraction form
    7,372.56/11,057.12 = 4,245.92/x
  3. Step 3: Cross multiply
    7,372.56x = 11,057.12 × 4,245.92
  4. Step 4: Simplify right side
    7,372.56x = 46,947,646.95
  5. Step 5: Solve for x
    x = 46,947,646.95/7,372.56
  6. Step 6: Final answer
    x = 6,367.89

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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.