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Finding the Fourth Proportional to 29,661.80, 44,466.87 and 12,120.44

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Solution

The fourth proportional to 29,661.80, 44,466.87 and 12,120.44 is: 18,170.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,661.80 : 44,466.87 = 12,120.44 : x
  2. Step 2: Convert to fraction form
    29,661.80/44,466.87 = 12,120.44/x
  3. Step 3: Cross multiply
    29,661.80x = 44,466.87 × 12,120.44
  4. Step 4: Simplify right side
    29,661.80x = 538,958,029.82
  5. Step 5: Solve for x
    x = 538,958,029.82/29,661.80
  6. Step 6: Final answer
    x = 18,170.11

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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.