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Finding the Fourth Proportional to 5,272.88, 7,905.24 and 3,192.39

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Solution

The fourth proportional to 5,272.88, 7,905.24 and 3,192.39 is: 4,786.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,272.88 : 7,905.24 = 3,192.39 : x
  2. Step 2: Convert to fraction form
    5,272.88/7,905.24 = 3,192.39/x
  3. Step 3: Cross multiply
    5,272.88x = 7,905.24 × 3,192.39
  4. Step 4: Simplify right side
    5,272.88x = 25,236,609.12
  5. Step 5: Solve for x
    x = 25,236,609.12/5,272.88
  6. Step 6: Final answer
    x = 4,786.12

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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.