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Finding the Fourth Proportional to 20,655.33, 30,984.15 and 5,863.08

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Solution

The fourth proportional to 20,655.33, 30,984.15 and 5,863.08 is: 8,794.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.33 : 30,984.15 = 5,863.08 : x
  2. Step 2: Convert to fraction form
    20,655.33/30,984.15 = 5,863.08/x
  3. Step 3: Cross multiply
    20,655.33x = 30,984.15 × 5,863.08
  4. Step 4: Simplify right side
    20,655.33x = 181,662,550.18
  5. Step 5: Solve for x
    x = 181,662,550.18/20,655.33
  6. Step 6: Final answer
    x = 8,794.95

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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.