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Finding the Fourth Proportional to 15,793.11, 23,679.68 and 8,872.47

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Solution

The fourth proportional to 15,793.11, 23,679.68 and 8,872.47 is: 13,303.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,793.11 : 23,679.68 = 8,872.47 : x
  2. Step 2: Convert to fraction form
    15,793.11/23,679.68 = 8,872.47/x
  3. Step 3: Cross multiply
    15,793.11x = 23,679.68 × 8,872.47
  4. Step 4: Simplify right side
    15,793.11x = 210,097,206.05
  5. Step 5: Solve for x
    x = 210,097,206.05/15,793.11
  6. Step 6: Final answer
    x = 13,303.09

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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.