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Finding the Fourth Proportional to 66,821.46, 92,213.59 and 36,608.66

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Solution

The fourth proportional to 66,821.46, 92,213.59 and 36,608.66 is: 50,519.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,821.46 : 92,213.59 = 36,608.66 : x
  2. Step 2: Convert to fraction form
    66,821.46/92,213.59 = 36,608.66/x
  3. Step 3: Cross multiply
    66,821.46x = 92,213.59 × 36,608.66
  4. Step 4: Simplify right side
    66,821.46x = 3,375,815,825.54
  5. Step 5: Solve for x
    x = 3,375,815,825.54/66,821.46
  6. Step 6: Final answer
    x = 50,519.94

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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.