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Finding the Fourth Proportional to 33,620.70, 50,431.05 and 28,436.70

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Solution

The fourth proportional to 33,620.70, 50,431.05 and 28,436.70 is: 42,655.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,620.70 : 50,431.05 = 28,436.70 : x
  2. Step 2: Convert to fraction form
    33,620.70/50,431.05 = 28,436.70/x
  3. Step 3: Cross multiply
    33,620.70x = 50,431.05 × 28,436.70
  4. Step 4: Simplify right side
    33,620.70x = 1,434,092,639.54
  5. Step 5: Solve for x
    x = 1,434,092,639.54/33,620.70
  6. Step 6: Final answer
    x = 42,655.05

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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.