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Finding the Fourth Proportional to 125,438.64, 173,105.88 and 68,850.48

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Solution

The fourth proportional to 125,438.64, 173,105.88 and 68,850.48 is: 95,013.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,438.64 : 173,105.88 = 68,850.48 : x
  2. Step 2: Convert to fraction form
    125,438.64/173,105.88 = 68,850.48/x
  3. Step 3: Cross multiply
    125,438.64x = 173,105.88 × 68,850.48
  4. Step 4: Simplify right side
    125,438.64x = 11,918,422,928.82
  5. Step 5: Solve for x
    x = 11,918,422,928.82/125,438.64
  6. Step 6: Final answer
    x = 95,013.97

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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.