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Finding the Fourth Proportional to 125,983.80, 173,796.38 and 80,625.42

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Solution

The fourth proportional to 125,983.80, 173,796.38 and 80,625.42 is: 111,223.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,983.80 : 173,796.38 = 80,625.42 : x
  2. Step 2: Convert to fraction form
    125,983.80/173,796.38 = 80,625.42/x
  3. Step 3: Cross multiply
    125,983.80x = 173,796.38 × 80,625.42
  4. Step 4: Simplify right side
    125,983.80x = 14,012,406,131.98
  5. Step 5: Solve for x
    x = 14,012,406,131.98/125,983.80
  6. Step 6: Final answer
    x = 111,223.87

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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.