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Finding the Fourth Proportional to 220,490.67, 330,766.92 and 70,695.75

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Solution

The fourth proportional to 220,490.67, 330,766.92 and 70,695.75 is: 106,053.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,490.67 : 330,766.92 = 70,695.75 : x
  2. Step 2: Convert to fraction form
    220,490.67/330,766.92 = 70,695.75/x
  3. Step 3: Cross multiply
    220,490.67x = 330,766.92 × 70,695.75
  4. Step 4: Simplify right side
    220,490.67x = 23,383,815,484.59
  5. Step 5: Solve for x
    x = 23,383,815,484.59/220,490.67
  6. Step 6: Final answer
    x = 106,053.54

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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.