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Finding the Fourth Proportional to 69,168.43, 103,623.48 and 39,496.31

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Solution

The fourth proportional to 69,168.43, 103,623.48 and 39,496.31 is: 59,170.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,168.43 : 103,623.48 = 39,496.31 : x
  2. Step 2: Convert to fraction form
    69,168.43/103,623.48 = 39,496.31/x
  3. Step 3: Cross multiply
    69,168.43x = 103,623.48 × 39,496.31
  4. Step 4: Simplify right side
    69,168.43x = 4,092,744,848.75
  5. Step 5: Solve for x
    x = 4,092,744,848.75/69,168.43
  6. Step 6: Final answer
    x = 59,170.71

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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.