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Finding the Fourth Proportional to 92,403.76, 138,620.60 and 36,213.41

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Solution

The fourth proportional to 92,403.76, 138,620.60 and 36,213.41 is: 54,325.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,403.76 : 138,620.60 = 36,213.41 : x
  2. Step 2: Convert to fraction form
    92,403.76/138,620.60 = 36,213.41/x
  3. Step 3: Cross multiply
    92,403.76x = 138,620.60 × 36,213.41
  4. Step 4: Simplify right side
    92,403.76x = 5,019,924,019.68
  5. Step 5: Solve for x
    x = 5,019,924,019.68/92,403.76
  6. Step 6: Final answer
    x = 54,325.97

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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.