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Finding the Fourth Proportional to 125,921.34, 173,770.38 and 69,331.50

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Solution

The fourth proportional to 125,921.34, 173,770.38 and 69,331.50 is: 95,676.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,921.34 : 173,770.38 = 69,331.50 : x
  2. Step 2: Convert to fraction form
    125,921.34/173,770.38 = 69,331.50/x
  3. Step 3: Cross multiply
    125,921.34x = 173,770.38 × 69,331.50
  4. Step 4: Simplify right side
    125,921.34x = 12,047,761,100.97
  5. Step 5: Solve for x
    x = 12,047,761,100.97/125,921.34
  6. Step 6: Final answer
    x = 95,676.88

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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.