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Finding the Fourth Proportional to 67,239.84, 92,787.31 and 37,019.43

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Solution

The fourth proportional to 67,239.84, 92,787.31 and 37,019.43 is: 51,084.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,239.84 : 92,787.31 = 37,019.43 : x
  2. Step 2: Convert to fraction form
    67,239.84/92,787.31 = 37,019.43/x
  3. Step 3: Cross multiply
    67,239.84x = 92,787.31 × 37,019.43
  4. Step 4: Simplify right side
    67,239.84x = 3,434,932,770.95
  5. Step 5: Solve for x
    x = 3,434,932,770.95/67,239.84
  6. Step 6: Final answer
    x = 51,084.78

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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.