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Finding the Fourth Proportional to 15,876.21, 23,793.42 and 8,859.53

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Solution

The fourth proportional to 15,876.21, 23,793.42 and 8,859.53 is: 13,277.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,876.21 : 23,793.42 = 8,859.53 : x
  2. Step 2: Convert to fraction form
    15,876.21/23,793.42 = 8,859.53/x
  3. Step 3: Cross multiply
    15,876.21x = 23,793.42 × 8,859.53
  4. Step 4: Simplify right side
    15,876.21x = 210,798,399.33
  5. Step 5: Solve for x
    x = 210,798,399.33/15,876.21
  6. Step 6: Final answer
    x = 13,277.63

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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.