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Finding the Fourth Proportional to 73,481.38, 110,239.38 and 20,891.32

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Solution

The fourth proportional to 73,481.38, 110,239.38 and 20,891.32 is: 31,341.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,481.38 : 110,239.38 = 20,891.32 : x
  2. Step 2: Convert to fraction form
    73,481.38/110,239.38 = 20,891.32/x
  3. Step 3: Cross multiply
    73,481.38x = 110,239.38 × 20,891.32
  4. Step 4: Simplify right side
    73,481.38x = 2,303,045,888.58
  5. Step 5: Solve for x
    x = 2,303,045,888.58/73,481.38
  6. Step 6: Final answer
    x = 31,341.90

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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.