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Finding the Fourth Proportional to 16,662.42, 24,965.92 and 11,721.68

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Solution

The fourth proportional to 16,662.42, 24,965.92 and 11,721.68 is: 17,563.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,662.42 : 24,965.92 = 11,721.68 : x
  2. Step 2: Convert to fraction form
    16,662.42/24,965.92 = 11,721.68/x
  3. Step 3: Cross multiply
    16,662.42x = 24,965.92 × 11,721.68
  4. Step 4: Simplify right side
    16,662.42x = 292,642,525.15
  5. Step 5: Solve for x
    x = 292,642,525.15/16,662.42
  6. Step 6: Final answer
    x = 17,563.03

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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.