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Finding the Fourth Proportional to 69,791.56, 96,411 and 54,078.64

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Solution

The fourth proportional to 69,791.56, 96,411 and 54,078.64 is: 74,704.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,791.56 : 96,411 = 54,078.64 : x
  2. Step 2: Convert to fraction form
    69,791.56/96,411 = 54,078.64/x
  3. Step 3: Cross multiply
    69,791.56x = 96,411 × 54,078.64
  4. Step 4: Simplify right side
    69,791.56x = 5,213,775,761.04
  5. Step 5: Solve for x
    x = 5,213,775,761.04/69,791.56
  6. Step 6: Final answer
    x = 74,704.96

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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.