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Finding the Fourth Proportional to 190,520.67, 285,912.23 and 65,861.67

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Solution

The fourth proportional to 190,520.67, 285,912.23 and 65,861.67 is: 98,837.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,520.67 : 285,912.23 = 65,861.67 : x
  2. Step 2: Convert to fraction form
    190,520.67/285,912.23 = 65,861.67/x
  3. Step 3: Cross multiply
    190,520.67x = 285,912.23 × 65,861.67
  4. Step 4: Simplify right side
    190,520.67x = 18,830,656,611.92
  5. Step 5: Solve for x
    x = 18,830,656,611.92/190,520.67
  6. Step 6: Final answer
    x = 98,837.87

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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.