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Finding the Fourth Proportional to 66,785.94, 92,163.72 and 38,104.86

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Solution

The fourth proportional to 66,785.94, 92,163.72 and 38,104.86 is: 52,584.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,785.94 : 92,163.72 = 38,104.86 : x
  2. Step 2: Convert to fraction form
    66,785.94/92,163.72 = 38,104.86/x
  3. Step 3: Cross multiply
    66,785.94x = 92,163.72 × 38,104.86
  4. Step 4: Simplify right side
    66,785.94x = 3,511,885,647.68
  5. Step 5: Solve for x
    x = 3,511,885,647.68/66,785.94
  6. Step 6: Final answer
    x = 52,584.21

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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.