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Finding the Fourth Proportional to 57,912.84, 87,014.34 and 36,861.84

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Solution

The fourth proportional to 57,912.84, 87,014.34 and 36,861.84 is: 55,385.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,912.84 : 87,014.34 = 36,861.84 : x
  2. Step 2: Convert to fraction form
    57,912.84/87,014.34 = 36,861.84/x
  3. Step 3: Cross multiply
    57,912.84x = 87,014.34 × 36,861.84
  4. Step 4: Simplify right side
    57,912.84x = 3,207,508,678.79
  5. Step 5: Solve for x
    x = 3,207,508,678.79/57,912.84
  6. Step 6: Final answer
    x = 55,385.10

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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.