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Finding the Fourth Proportional to 40,361.92, 60,552.60 and 12,659.92

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Solution

The fourth proportional to 40,361.92, 60,552.60 and 12,659.92 is: 18,992.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,361.92 : 60,552.60 = 12,659.92 : x
  2. Step 2: Convert to fraction form
    40,361.92/60,552.60 = 12,659.92/x
  3. Step 3: Cross multiply
    40,361.92x = 60,552.60 × 12,659.92
  4. Step 4: Simplify right side
    40,361.92x = 766,591,071.79
  5. Step 5: Solve for x
    x = 766,591,071.79/40,361.92
  6. Step 6: Final answer
    x = 18,992.93

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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.