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Finding the Fourth Proportional to 62,782.56, 94,163.49 and 20,663.19

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Solution

The fourth proportional to 62,782.56, 94,163.49 and 20,663.19 is: 30,991.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,782.56 : 94,163.49 = 20,663.19 : x
  2. Step 2: Convert to fraction form
    62,782.56/94,163.49 = 20,663.19/x
  3. Step 3: Cross multiply
    62,782.56x = 94,163.49 × 20,663.19
  4. Step 4: Simplify right side
    62,782.56x = 1,945,718,084.93
  5. Step 5: Solve for x
    x = 1,945,718,084.93/62,782.56
  6. Step 6: Final answer
    x = 30,991.38

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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.