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Finding the Fourth Proportional to 108,578.69, 149,844.74 and 60,847.41

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Solution

The fourth proportional to 108,578.69, 149,844.74 and 60,847.41 is: 83,972.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,578.69 : 149,844.74 = 60,847.41 : x
  2. Step 2: Convert to fraction form
    108,578.69/149,844.74 = 60,847.41/x
  3. Step 3: Cross multiply
    108,578.69x = 149,844.74 × 60,847.41
  4. Step 4: Simplify right side
    108,578.69x = 9,117,664,331.12
  5. Step 5: Solve for x
    x = 9,117,664,331.12/108,578.69
  6. Step 6: Final answer
    x = 83,972.87

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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.