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Finding the Fourth Proportional to 227,912.40, 341,868.60 and 78,132.60

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Solution

The fourth proportional to 227,912.40, 341,868.60 and 78,132.60 is: 117,198.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,912.40 : 341,868.60 = 78,132.60 : x
  2. Step 2: Convert to fraction form
    227,912.40/341,868.60 = 78,132.60/x
  3. Step 3: Cross multiply
    227,912.40x = 341,868.60 × 78,132.60
  4. Step 4: Simplify right side
    227,912.40x = 26,711,082,576.36
  5. Step 5: Solve for x
    x = 26,711,082,576.36/227,912.40
  6. Step 6: Final answer
    x = 117,198.90

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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.