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Finding the Fourth Proportional to 20,581.97, 30,873.11 and 5,792.39

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Solution

The fourth proportional to 20,581.97, 30,873.11 and 5,792.39 is: 8,688.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.97 : 30,873.11 = 5,792.39 : x
  2. Step 2: Convert to fraction form
    20,581.97/30,873.11 = 5,792.39/x
  3. Step 3: Cross multiply
    20,581.97x = 30,873.11 × 5,792.39
  4. Step 4: Simplify right side
    20,581.97x = 178,829,093.63
  5. Step 5: Solve for x
    x = 178,829,093.63/20,581.97
  6. Step 6: Final answer
    x = 8,688.63

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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.