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Finding the Fourth Proportional to 220,563.90, 330,845.85 and 200,224.80

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Solution

The fourth proportional to 220,563.90, 330,845.85 and 200,224.80 is: 300,337.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,563.90 : 330,845.85 = 200,224.80 : x
  2. Step 2: Convert to fraction form
    220,563.90/330,845.85 = 200,224.80/x
  3. Step 3: Cross multiply
    220,563.90x = 330,845.85 × 200,224.80
  4. Step 4: Simplify right side
    220,563.90x = 66,243,544,147.08
  5. Step 5: Solve for x
    x = 66,243,544,147.08/220,563.90
  6. Step 6: Final answer
    x = 300,337.20

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1.5x scale

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.