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Finding the Fourth Proportional to 67,894.53, 101,840.24 and 39,991.59

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Solution

The fourth proportional to 67,894.53, 101,840.24 and 39,991.59 is: 59,986.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,894.53 : 101,840.24 = 39,991.59 : x
  2. Step 2: Convert to fraction form
    67,894.53/101,840.24 = 39,991.59/x
  3. Step 3: Cross multiply
    67,894.53x = 101,840.24 × 39,991.59
  4. Step 4: Simplify right side
    67,894.53x = 4,072,753,123.58
  5. Step 5: Solve for x
    x = 4,072,753,123.58/67,894.53
  6. Step 6: Final answer
    x = 59,986.47

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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.