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Finding the Fourth Proportional to 20,591.82, 30,887.53 and 5,009.45

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Solution

The fourth proportional to 20,591.82, 30,887.53 and 5,009.45 is: 7,514.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,591.82 : 30,887.53 = 5,009.45 : x
  2. Step 2: Convert to fraction form
    20,591.82/30,887.53 = 5,009.45/x
  3. Step 3: Cross multiply
    20,591.82x = 30,887.53 × 5,009.45
  4. Step 4: Simplify right side
    20,591.82x = 154,729,370.20
  5. Step 5: Solve for x
    x = 154,729,370.20/20,591.82
  6. Step 6: Final answer
    x = 7,514.12

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.