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Finding the Fourth Proportional to 66,207.65, 91,367.46 and 35,992.97

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Solution

The fourth proportional to 66,207.65, 91,367.46 and 35,992.97 is: 49,670.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,207.65 : 91,367.46 = 35,992.97 : x
  2. Step 2: Convert to fraction form
    66,207.65/91,367.46 = 35,992.97/x
  3. Step 3: Cross multiply
    66,207.65x = 91,367.46 × 35,992.97
  4. Step 4: Simplify right side
    66,207.65x = 3,288,586,132.55
  5. Step 5: Solve for x
    x = 3,288,586,132.55/66,207.65
  6. Step 6: Final answer
    x = 49,670.79

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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.