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Finding the Fourth Proportional to 89,517.60, 134,270.64 and 27,188.64

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Solution

The fourth proportional to 89,517.60, 134,270.64 and 27,188.64 is: 40,781.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,517.60 : 134,270.64 = 27,188.64 : x
  2. Step 2: Convert to fraction form
    89,517.60/134,270.64 = 27,188.64/x
  3. Step 3: Cross multiply
    89,517.60x = 134,270.64 × 27,188.64
  4. Step 4: Simplify right side
    89,517.60x = 3,650,636,093.53
  5. Step 5: Solve for x
    x = 3,650,636,093.53/89,517.60
  6. Step 6: Final answer
    x = 40,781.21

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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.