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Finding the Fourth Proportional to 73,181.94, 109,763.01 and 20,595.90

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Solution

The fourth proportional to 73,181.94, 109,763.01 and 20,595.90 is: 30,891.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,181.94 : 109,763.01 = 20,595.90 : x
  2. Step 2: Convert to fraction form
    73,181.94/109,763.01 = 20,595.90/x
  3. Step 3: Cross multiply
    73,181.94x = 109,763.01 × 20,595.90
  4. Step 4: Simplify right side
    73,181.94x = 2,260,667,977.66
  5. Step 5: Solve for x
    x = 2,260,667,977.66/73,181.94
  6. Step 6: Final answer
    x = 30,891.06

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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.