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Finding the Fourth Proportional to 20,656.44, 30,985.07 and 5,865.44

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Solution

The fourth proportional to 20,656.44, 30,985.07 and 5,865.44 is: 8,798.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.44 : 30,985.07 = 5,865.44 : x
  2. Step 2: Convert to fraction form
    20,656.44/30,985.07 = 5,865.44/x
  3. Step 3: Cross multiply
    20,656.44x = 30,985.07 × 5,865.44
  4. Step 4: Simplify right side
    20,656.44x = 181,740,884.73
  5. Step 5: Solve for x
    x = 181,740,884.73/20,656.44
  6. Step 6: Final answer
    x = 8,798.27

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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.