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Finding the Fourth Proportional to 45,286.70, 67,949.28 and 24,221.28

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Solution

The fourth proportional to 45,286.70, 67,949.28 and 24,221.28 is: 36,342.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,286.70 : 67,949.28 = 24,221.28 : x
  2. Step 2: Convert to fraction form
    45,286.70/67,949.28 = 24,221.28/x
  3. Step 3: Cross multiply
    45,286.70x = 67,949.28 × 24,221.28
  4. Step 4: Simplify right side
    45,286.70x = 1,645,818,536.68
  5. Step 5: Solve for x
    x = 1,645,818,536.68/45,286.70
  6. Step 6: Final answer
    x = 36,342.21

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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.