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Finding the Fourth Proportional to 66,575.44, 91,687.41 and 66,367.85

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Solution

The fourth proportional to 66,575.44, 91,687.41 and 66,367.85 is: 91,401.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,575.44 : 91,687.41 = 66,367.85 : x
  2. Step 2: Convert to fraction form
    66,575.44/91,687.41 = 66,367.85/x
  3. Step 3: Cross multiply
    66,575.44x = 91,687.41 × 66,367.85
  4. Step 4: Simplify right side
    66,575.44x = 6,085,096,116.50
  5. Step 5: Solve for x
    x = 6,085,096,116.50/66,575.44
  6. Step 6: Final answer
    x = 91,401.51

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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.