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Finding the Fourth Proportional to 67,991.72, 93,828.74 and 37,778.94

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Solution

The fourth proportional to 67,991.72, 93,828.74 and 37,778.94 is: 52,135.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,991.72 : 93,828.74 = 37,778.94 : x
  2. Step 2: Convert to fraction form
    67,991.72/93,828.74 = 37,778.94/x
  3. Step 3: Cross multiply
    67,991.72x = 93,828.74 × 37,778.94
  4. Step 4: Simplify right side
    67,991.72x = 3,544,750,149.84
  5. Step 5: Solve for x
    x = 3,544,750,149.84/67,991.72
  6. Step 6: Final answer
    x = 52,135.03

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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.