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Finding the Fourth Proportional to 66,881.75, 92,297.56 and 38,205.20

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Solution

The fourth proportional to 66,881.75, 92,297.56 and 38,205.20 is: 52,723.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,881.75 : 92,297.56 = 38,205.20 : x
  2. Step 2: Convert to fraction form
    66,881.75/92,297.56 = 38,205.20/x
  3. Step 3: Cross multiply
    66,881.75x = 92,297.56 × 38,205.20
  4. Step 4: Simplify right side
    66,881.75x = 3,526,246,874.54
  5. Step 5: Solve for x
    x = 3,526,246,874.54/66,881.75
  6. Step 6: Final answer
    x = 52,723.61

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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.