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Finding the Fourth Proportional to 66,991.50, 92,448.63 and 41,855.58

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Solution

The fourth proportional to 66,991.50, 92,448.63 and 41,855.58 is: 57,760.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,991.50 : 92,448.63 = 41,855.58 : x
  2. Step 2: Convert to fraction form
    66,991.50/92,448.63 = 41,855.58/x
  3. Step 3: Cross multiply
    66,991.50x = 92,448.63 × 41,855.58
  4. Step 4: Simplify right side
    66,991.50x = 3,869,491,028.86
  5. Step 5: Solve for x
    x = 3,869,491,028.86/66,991.50
  6. Step 6: Final answer
    x = 57,760.93

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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.