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Finding the Fourth Proportional to 66,338.25, 91,544.94 and 36,122.91

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Solution

The fourth proportional to 66,338.25, 91,544.94 and 36,122.91 is: 49,848.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,338.25 : 91,544.94 = 36,122.91 : x
  2. Step 2: Convert to fraction form
    66,338.25/91,544.94 = 36,122.91/x
  3. Step 3: Cross multiply
    66,338.25x = 91,544.94 × 36,122.91
  4. Step 4: Simplify right side
    66,338.25x = 3,306,869,628.58
  5. Step 5: Solve for x
    x = 3,306,869,628.58/66,338.25
  6. Step 6: Final answer
    x = 49,848.61

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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.