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Finding the Fourth Proportional to 18,453.31, 27,662.93 and 7,357.31

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Solution

The fourth proportional to 18,453.31, 27,662.93 and 7,357.31 is: 11,029.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,453.31 : 27,662.93 = 7,357.31 : x
  2. Step 2: Convert to fraction form
    18,453.31/27,662.93 = 7,357.31/x
  3. Step 3: Cross multiply
    18,453.31x = 27,662.93 × 7,357.31
  4. Step 4: Simplify right side
    18,453.31x = 203,524,811.48
  5. Step 5: Solve for x
    x = 203,524,811.48/18,453.31
  6. Step 6: Final answer
    x = 11,029.18

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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.