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Finding the Fourth Proportional to 66,611.77, 91,927.88 and 37,940.42

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Solution

The fourth proportional to 66,611.77, 91,927.88 and 37,940.42 is: 52,359.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,611.77 : 91,927.88 = 37,940.42 : x
  2. Step 2: Convert to fraction form
    66,611.77/91,927.88 = 37,940.42/x
  3. Step 3: Cross multiply
    66,611.77x = 91,927.88 × 37,940.42
  4. Step 4: Simplify right side
    66,611.77x = 3,487,782,578.73
  5. Step 5: Solve for x
    x = 3,487,782,578.73/66,611.77
  6. Step 6: Final answer
    x = 52,359.85

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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.