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Finding the Fourth Proportional to 7,238.52, 10,857.21 and 3,342.96

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Solution

The fourth proportional to 7,238.52, 10,857.21 and 3,342.96 is: 5,014.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,238.52 : 10,857.21 = 3,342.96 : x
  2. Step 2: Convert to fraction form
    7,238.52/10,857.21 = 3,342.96/x
  3. Step 3: Cross multiply
    7,238.52x = 10,857.21 × 3,342.96
  4. Step 4: Simplify right side
    7,238.52x = 36,295,218.74
  5. Step 5: Solve for x
    x = 36,295,218.74/7,238.52
  6. Step 6: Final answer
    x = 5,014.18

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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.