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Finding the Fourth Proportional to 66,991, 92,447.94 and 41,855.08

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Solution

The fourth proportional to 66,991, 92,447.94 and 41,855.08 is: 57,760.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,991 : 92,447.94 = 41,855.08 : x
  2. Step 2: Convert to fraction form
    66,991/92,447.94 = 41,855.08/x
  3. Step 3: Cross multiply
    66,991x = 92,447.94 × 41,855.08
  4. Step 4: Simplify right side
    66,991x = 3,869,415,924.54
  5. Step 5: Solve for x
    x = 3,869,415,924.54/66,991
  6. Step 6: Final answer
    x = 57,760.24

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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.