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Finding the Fourth Proportional to 66,297.94, 99,446.92 and 54,586.56

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Solution

The fourth proportional to 66,297.94, 99,446.92 and 54,586.56 is: 81,879.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,297.94 : 99,446.92 = 54,586.56 : x
  2. Step 2: Convert to fraction form
    66,297.94/99,446.92 = 54,586.56/x
  3. Step 3: Cross multiply
    66,297.94x = 99,446.92 × 54,586.56
  4. Step 4: Simplify right side
    66,297.94x = 5,428,465,265.40
  5. Step 5: Solve for x
    x = 5,428,465,265.40/66,297.94
  6. Step 6: Final answer
    x = 81,879.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.