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Finding the Fourth Proportional to 220,584.61, 330,715.60 and 70,739.61

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Solution

The fourth proportional to 220,584.61, 330,715.60 and 70,739.61 is: 106,057.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,584.61 : 330,715.60 = 70,739.61 : x
  2. Step 2: Convert to fraction form
    220,584.61/330,715.60 = 70,739.61/x
  3. Step 3: Cross multiply
    220,584.61x = 330,715.60 × 70,739.61
  4. Step 4: Simplify right side
    220,584.61x = 23,394,692,564.92
  5. Step 5: Solve for x
    x = 23,394,692,564.92/220,584.61
  6. Step 6: Final answer
    x = 106,057.68

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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.