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Finding the Fourth Proportional to 29,410.75, 44,120.99 and 8,639.11

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Solution

The fourth proportional to 29,410.75, 44,120.99 and 8,639.11 is: 12,960.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,410.75 : 44,120.99 = 8,639.11 : x
  2. Step 2: Convert to fraction form
    29,410.75/44,120.99 = 8,639.11/x
  3. Step 3: Cross multiply
    29,410.75x = 44,120.99 × 8,639.11
  4. Step 4: Simplify right side
    29,410.75x = 381,166,085.92
  5. Step 5: Solve for x
    x = 381,166,085.92/29,410.75
  6. Step 6: Final answer
    x = 12,960.09

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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.