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Finding the Fourth Proportional to 68,057.62, 93,920.11 and 37,431.32

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Solution

The fourth proportional to 68,057.62, 93,920.11 and 37,431.32 is: 51,655.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,057.62 : 93,920.11 = 37,431.32 : x
  2. Step 2: Convert to fraction form
    68,057.62/93,920.11 = 37,431.32/x
  3. Step 3: Cross multiply
    68,057.62x = 93,920.11 × 37,431.32
  4. Step 4: Simplify right side
    68,057.62x = 3,515,553,128.67
  5. Step 5: Solve for x
    x = 3,515,553,128.67/68,057.62
  6. Step 6: Final answer
    x = 51,655.54

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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.