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Finding the Fourth Proportional to 8,472.09, 12,703.01 and 3,791.23

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Solution

The fourth proportional to 8,472.09, 12,703.01 and 3,791.23 is: 5,684.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.09 : 12,703.01 = 3,791.23 : x
  2. Step 2: Convert to fraction form
    8,472.09/12,703.01 = 3,791.23/x
  3. Step 3: Cross multiply
    8,472.09x = 12,703.01 × 3,791.23
  4. Step 4: Simplify right side
    8,472.09x = 48,160,057.96
  5. Step 5: Solve for x
    x = 48,160,057.96/8,472.09
  6. Step 6: Final answer
    x = 5,684.55

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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.