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Finding the Fourth Proportional to 69,576.72, 96,681.94 and 68,854.20

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Solution

The fourth proportional to 69,576.72, 96,681.94 and 68,854.20 is: 95,677.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,576.72 : 96,681.94 = 68,854.20 : x
  2. Step 2: Convert to fraction form
    69,576.72/96,681.94 = 68,854.20/x
  3. Step 3: Cross multiply
    69,576.72x = 96,681.94 × 68,854.20
  4. Step 4: Simplify right side
    69,576.72x = 6,656,957,633.15
  5. Step 5: Solve for x
    x = 6,656,957,633.15/69,576.72
  6. Step 6: Final answer
    x = 95,677.95

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.