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Finding the Fourth Proportional to 22,285.80, 33,428.70 and 14,412.60

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Solution

The fourth proportional to 22,285.80, 33,428.70 and 14,412.60 is: 21,618.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,285.80 : 33,428.70 = 14,412.60 : x
  2. Step 2: Convert to fraction form
    22,285.80/33,428.70 = 14,412.60/x
  3. Step 3: Cross multiply
    22,285.80x = 33,428.70 × 14,412.60
  4. Step 4: Simplify right side
    22,285.80x = 481,794,481.62
  5. Step 5: Solve for x
    x = 481,794,481.62/22,285.80
  6. Step 6: Final answer
    x = 21,618.90

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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.