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Finding the Fourth Proportional to 125,958.56, 173,821.92 and 69,369.60

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Solution

The fourth proportional to 125,958.56, 173,821.92 and 69,369.60 is: 95,729.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,958.56 : 173,821.92 = 69,369.60 : x
  2. Step 2: Convert to fraction form
    125,958.56/173,821.92 = 69,369.60/x
  3. Step 3: Cross multiply
    125,958.56x = 173,821.92 × 69,369.60
  4. Step 4: Simplify right side
    125,958.56x = 12,057,957,061.63
  5. Step 5: Solve for x
    x = 12,057,957,061.63/125,958.56
  6. Step 6: Final answer
    x = 95,729.56

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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.