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Finding the Fourth Proportional to 68,984.61, 103,516.82 and 29,000.43

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Solution

The fourth proportional to 68,984.61, 103,516.82 and 29,000.43 is: 43,517.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,984.61 : 103,516.82 = 29,000.43 : x
  2. Step 2: Convert to fraction form
    68,984.61/103,516.82 = 29,000.43/x
  3. Step 3: Cross multiply
    68,984.61x = 103,516.82 × 29,000.43
  4. Step 4: Simplify right side
    68,984.61x = 3,002,032,364.73
  5. Step 5: Solve for x
    x = 3,002,032,364.73/68,984.61
  6. Step 6: Final answer
    x = 43,517.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.