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Finding the Fourth Proportional to 20,596.87, 30,845.76 and 19,563.31

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Solution

The fourth proportional to 20,596.87, 30,845.76 and 19,563.31 is: 29,297.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,596.87 : 30,845.76 = 19,563.31 : x
  2. Step 2: Convert to fraction form
    20,596.87/30,845.76 = 19,563.31/x
  3. Step 3: Cross multiply
    20,596.87x = 30,845.76 × 19,563.31
  4. Step 4: Simplify right side
    20,596.87x = 603,445,165.07
  5. Step 5: Solve for x
    x = 603,445,165.07/20,596.87
  6. Step 6: Final answer
    x = 29,297.91

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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.