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Finding the Fourth Proportional to 18,511.10, 27,770.70 and 6,031.70

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Solution

The fourth proportional to 18,511.10, 27,770.70 and 6,031.70 is: 9,048.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,511.10 : 27,770.70 = 6,031.70 : x
  2. Step 2: Convert to fraction form
    18,511.10/27,770.70 = 6,031.70/x
  3. Step 3: Cross multiply
    18,511.10x = 27,770.70 × 6,031.70
  4. Step 4: Simplify right side
    18,511.10x = 167,504,531.19
  5. Step 5: Solve for x
    x = 167,504,531.19/18,511.10
  6. Step 6: Final answer
    x = 9,048.87

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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.