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Finding the Fourth Proportional to 48,859.55, 73,324.32 and 20,799.28

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Solution

The fourth proportional to 48,859.55, 73,324.32 and 20,799.28 is: 31,213.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,859.55 : 73,324.32 = 20,799.28 : x
  2. Step 2: Convert to fraction form
    48,859.55/73,324.32 = 20,799.28/x
  3. Step 3: Cross multiply
    48,859.55x = 73,324.32 × 20,799.28
  4. Step 4: Simplify right side
    48,859.55x = 1,525,093,062.49
  5. Step 5: Solve for x
    x = 1,525,093,062.49/48,859.55
  6. Step 6: Final answer
    x = 31,213.82

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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.