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Finding the Fourth Proportional to 11,800.63, 17,704.02 and 4,405.15

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Solution

The fourth proportional to 11,800.63, 17,704.02 and 4,405.15 is: 6,608.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,800.63 : 17,704.02 = 4,405.15 : x
  2. Step 2: Convert to fraction form
    11,800.63/17,704.02 = 4,405.15/x
  3. Step 3: Cross multiply
    11,800.63x = 17,704.02 × 4,405.15
  4. Step 4: Simplify right side
    11,800.63x = 77,988,863.70
  5. Step 5: Solve for x
    x = 77,988,863.70/11,800.63
  6. Step 6: Final answer
    x = 6,608.87

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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.