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Finding the Fourth Proportional to 123,757.13, 170,784.95 and 67,168.51

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Solution

The fourth proportional to 123,757.13, 170,784.95 and 67,168.51 is: 92,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,757.13 : 170,784.95 = 67,168.51 : x
  2. Step 2: Convert to fraction form
    123,757.13/170,784.95 = 67,168.51/x
  3. Step 3: Cross multiply
    123,757.13x = 170,784.95 × 67,168.51
  4. Step 4: Simplify right side
    123,757.13x = 11,471,369,768.00
  5. Step 5: Solve for x
    x = 11,471,369,768.00/123,757.13
  6. Step 6: Final answer
    x = 92,692.60

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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.