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Finding the Fourth Proportional to 90,571.76, 135,863.88 and 37,928.24

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Solution

The fourth proportional to 90,571.76, 135,863.88 and 37,928.24 is: 56,894.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,571.76 : 135,863.88 = 37,928.24 : x
  2. Step 2: Convert to fraction form
    90,571.76/135,863.88 = 37,928.24/x
  3. Step 3: Cross multiply
    90,571.76x = 135,863.88 × 37,928.24
  4. Step 4: Simplify right side
    90,571.76x = 5,153,077,847.97
  5. Step 5: Solve for x
    x = 5,153,077,847.97/90,571.76
  6. Step 6: Final answer
    x = 56,894.97

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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.