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Finding the Fourth Proportional to 15,086.00, 20,819.01 and 8,371.38

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Solution

The fourth proportional to 15,086.00, 20,819.01 and 8,371.38 is: 11,552.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,086.00 : 20,819.01 = 8,371.38 : x
  2. Step 2: Convert to fraction form
    15,086.00/20,819.01 = 8,371.38/x
  3. Step 3: Cross multiply
    15,086.00x = 20,819.01 × 8,371.38
  4. Step 4: Simplify right side
    15,086.00x = 174,283,843.93
  5. Step 5: Solve for x
    x = 174,283,843.93/15,086.00
  6. Step 6: Final answer
    x = 11,552.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.