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Finding the Fourth Proportional to 29,409.75, 44,119.49 and 8,638.11

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Solution

The fourth proportional to 29,409.75, 44,119.49 and 8,638.11 is: 12,958.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,409.75 : 44,119.49 = 8,638.11 : x
  2. Step 2: Convert to fraction form
    29,409.75/44,119.49 = 8,638.11/x
  3. Step 3: Cross multiply
    29,409.75x = 44,119.49 × 8,638.11
  4. Step 4: Simplify right side
    29,409.75x = 381,108,964.57
  5. Step 5: Solve for x
    x = 381,108,964.57/29,409.75
  6. Step 6: Final answer
    x = 12,958.59

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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.