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Finding the Fourth Proportional to 15,869.72, 23,808.23 and 8,481.31

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Solution

The fourth proportional to 15,869.72, 23,808.23 and 8,481.31 is: 12,723.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.72 : 23,808.23 = 8,481.31 : x
  2. Step 2: Convert to fraction form
    15,869.72/23,808.23 = 8,481.31/x
  3. Step 3: Cross multiply
    15,869.72x = 23,808.23 × 8,481.31
  4. Step 4: Simplify right side
    15,869.72x = 201,924,909.06
  5. Step 5: Solve for x
    x = 201,924,909.06/15,869.72
  6. Step 6: Final answer
    x = 12,723.91

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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.