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Finding the Fourth Proportional to 29,769.40, 44,679.30 and 12,251.80

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Solution

The fourth proportional to 29,769.40, 44,679.30 and 12,251.80 is: 18,388.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,769.40 : 44,679.30 = 12,251.80 : x
  2. Step 2: Convert to fraction form
    29,769.40/44,679.30 = 12,251.80/x
  3. Step 3: Cross multiply
    29,769.40x = 44,679.30 × 12,251.80
  4. Step 4: Simplify right side
    29,769.40x = 547,401,847.74
  5. Step 5: Solve for x
    x = 547,401,847.74/29,769.40
  6. Step 6: Final answer
    x = 18,388.07

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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.