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Finding the Fourth Proportional to 220,500.67, 330,781.92 and 70,705.75

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Solution

The fourth proportional to 220,500.67, 330,781.92 and 70,705.75 is: 106,068.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,500.67 : 330,781.92 = 70,705.75 : x
  2. Step 2: Convert to fraction form
    220,500.67/330,781.92 = 70,705.75/x
  3. Step 3: Cross multiply
    220,500.67x = 330,781.92 × 70,705.75
  4. Step 4: Simplify right side
    220,500.67x = 23,388,183,740.04
  5. Step 5: Solve for x
    x = 23,388,183,740.04/220,500.67
  6. Step 6: Final answer
    x = 106,068.54

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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.