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Finding the Fourth Proportional to 22,420.40, 33,614.40 and 12,562.70

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Solution

The fourth proportional to 22,420.40, 33,614.40 and 12,562.70 is: 18,834.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,420.40 : 33,614.40 = 12,562.70 : x
  2. Step 2: Convert to fraction form
    22,420.40/33,614.40 = 12,562.70/x
  3. Step 3: Cross multiply
    22,420.40x = 33,614.40 × 12,562.70
  4. Step 4: Simplify right side
    22,420.40x = 422,287,622.88
  5. Step 5: Solve for x
    x = 422,287,622.88/22,420.40
  6. Step 6: Final answer
    x = 18,834.97

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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.