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Finding the Fourth Proportional to 219,912.70, 329,869.05 and 166,768.60

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Solution

The fourth proportional to 219,912.70, 329,869.05 and 166,768.60 is: 250,152.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,912.70 : 329,869.05 = 166,768.60 : x
  2. Step 2: Convert to fraction form
    219,912.70/329,869.05 = 166,768.60/x
  3. Step 3: Cross multiply
    219,912.70x = 329,869.05 × 166,768.60
  4. Step 4: Simplify right side
    219,912.70x = 55,011,799,651.83
  5. Step 5: Solve for x
    x = 55,011,799,651.83/219,912.70
  6. Step 6: Final answer
    x = 250,152.90

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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.