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Finding the Fourth Proportional to 124,692.27, 171,712.91 and 108,331.91

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Solution

The fourth proportional to 124,692.27, 171,712.91 and 108,331.91 is: 149,183.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,692.27 : 171,712.91 = 108,331.91 : x
  2. Step 2: Convert to fraction form
    124,692.27/171,712.91 = 108,331.91/x
  3. Step 3: Cross multiply
    124,692.27x = 171,712.91 × 108,331.91
  4. Step 4: Simplify right side
    124,692.27x = 18,601,987,486.29
  5. Step 5: Solve for x
    x = 18,601,987,486.29/124,692.27
  6. Step 6: Final answer
    x = 149,183.16

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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.