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Finding the Fourth Proportional to 65,794.38, 90,806.37 and 43,198.87

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Solution

The fourth proportional to 65,794.38, 90,806.37 and 43,198.87 is: 59,621.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,794.38 : 90,806.37 = 43,198.87 : x
  2. Step 2: Convert to fraction form
    65,794.38/90,806.37 = 43,198.87/x
  3. Step 3: Cross multiply
    65,794.38x = 90,806.37 × 43,198.87
  4. Step 4: Simplify right side
    65,794.38x = 3,922,732,354.05
  5. Step 5: Solve for x
    x = 3,922,732,354.05/65,794.38
  6. Step 6: Final answer
    x = 59,621.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.