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Finding the Fourth Proportional to 29,786.92, 44,669.82 and 8,721

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Solution

The fourth proportional to 29,786.92, 44,669.82 and 8,721 is: 13,078.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,786.92 : 44,669.82 = 8,721 : x
  2. Step 2: Convert to fraction form
    29,786.92/44,669.82 = 8,721/x
  3. Step 3: Cross multiply
    29,786.92x = 44,669.82 × 8,721
  4. Step 4: Simplify right side
    29,786.92x = 389,565,500.22
  5. Step 5: Solve for x
    x = 389,565,500.22/29,786.92
  6. Step 6: Final answer
    x = 13,078.41

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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.