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Finding the Fourth Proportional to 66,455.91, 91,708.02 and 36,241.47

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Solution

The fourth proportional to 66,455.91, 91,708.02 and 36,241.47 is: 50,012.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,455.91 : 91,708.02 = 36,241.47 : x
  2. Step 2: Convert to fraction form
    66,455.91/91,708.02 = 36,241.47/x
  3. Step 3: Cross multiply
    66,455.91x = 91,708.02 × 36,241.47
  4. Step 4: Simplify right side
    66,455.91x = 3,323,633,455.59
  5. Step 5: Solve for x
    x = 3,323,633,455.59/66,455.91
  6. Step 6: Final answer
    x = 50,012.61

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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.