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Finding the Fourth Proportional to 122,965.39, 169,692.81 and 69,251.32

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Solution

The fourth proportional to 122,965.39, 169,692.81 and 69,251.32 is: 95,567.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,965.39 : 169,692.81 = 69,251.32 : x
  2. Step 2: Convert to fraction form
    122,965.39/169,692.81 = 69,251.32/x
  3. Step 3: Cross multiply
    122,965.39x = 169,692.81 × 69,251.32
  4. Step 4: Simplify right side
    122,965.39x = 11,751,450,238.55
  5. Step 5: Solve for x
    x = 11,751,450,238.55/122,965.39
  6. Step 6: Final answer
    x = 95,567.14

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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.