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Finding the Fourth Proportional to 90,633.92, 135,964.71 and 46,236.45

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Solution

The fourth proportional to 90,633.92, 135,964.71 and 46,236.45 is: 69,361.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,633.92 : 135,964.71 = 46,236.45 : x
  2. Step 2: Convert to fraction form
    90,633.92/135,964.71 = 46,236.45/x
  3. Step 3: Cross multiply
    90,633.92x = 135,964.71 × 46,236.45
  4. Step 4: Simplify right side
    90,633.92x = 6,286,525,515.68
  5. Step 5: Solve for x
    x = 6,286,525,515.68/90,633.92
  6. Step 6: Final answer
    x = 69,361.73

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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.