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Finding the Fourth Proportional to 61,375.72, 84,331.43 and 48,778.60

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Solution

The fourth proportional to 61,375.72, 84,331.43 and 48,778.60 is: 67,022.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,375.72 : 84,331.43 = 48,778.60 : x
  2. Step 2: Convert to fraction form
    61,375.72/84,331.43 = 48,778.60/x
  3. Step 3: Cross multiply
    61,375.72x = 84,331.43 × 48,778.60
  4. Step 4: Simplify right side
    61,375.72x = 4,113,569,091.40
  5. Step 5: Solve for x
    x = 4,113,569,091.40/61,375.72
  6. Step 6: Final answer
    x = 67,022.74

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.