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Finding the Fourth Proportional to 220,870.54, 331,358.73 and 71,124.94

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Solution

The fourth proportional to 220,870.54, 331,358.73 and 71,124.94 is: 106,704.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,870.54 : 331,358.73 = 71,124.94 : x
  2. Step 2: Convert to fraction form
    220,870.54/331,358.73 = 71,124.94/x
  3. Step 3: Cross multiply
    220,870.54x = 331,358.73 × 71,124.94
  4. Step 4: Simplify right side
    220,870.54x = 23,567,869,789.73
  5. Step 5: Solve for x
    x = 23,567,869,789.73/220,870.54
  6. Step 6: Final answer
    x = 106,704.45

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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.