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Finding the Fourth Proportional to 159,596.96, 220,255.08 and 91,625

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Solution

The fourth proportional to 159,596.96, 220,255.08 and 91,625 is: 126,448.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,596.96 : 220,255.08 = 91,625 : x
  2. Step 2: Convert to fraction form
    159,596.96/220,255.08 = 91,625/x
  3. Step 3: Cross multiply
    159,596.96x = 220,255.08 × 91,625
  4. Step 4: Simplify right side
    159,596.96x = 20,180,871,705
  5. Step 5: Solve for x
    x = 20,180,871,705/159,596.96
  6. Step 6: Final answer
    x = 126,448.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.