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Finding the Fourth Proportional to 22,296.40, 33,433.80 and 12,425.20

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Solution

The fourth proportional to 22,296.40, 33,433.80 and 12,425.20 is: 18,631.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,296.40 : 33,433.80 = 12,425.20 : x
  2. Step 2: Convert to fraction form
    22,296.40/33,433.80 = 12,425.20/x
  3. Step 3: Cross multiply
    22,296.40x = 33,433.80 × 12,425.20
  4. Step 4: Simplify right side
    22,296.40x = 415,421,651.76
  5. Step 5: Solve for x
    x = 415,421,651.76/22,296.40
  6. Step 6: Final answer
    x = 18,631.78

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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.