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Finding the Fourth Proportional to 125,668.64, 173,463.17 and 80,468.42

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Solution

The fourth proportional to 125,668.64, 173,463.17 and 80,468.42 is: 111,072.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,668.64 : 173,463.17 = 80,468.42 : x
  2. Step 2: Convert to fraction form
    125,668.64/173,463.17 = 80,468.42/x
  3. Step 3: Cross multiply
    125,668.64x = 173,463.17 × 80,468.42
  4. Step 4: Simplify right side
    125,668.64x = 13,958,305,948.43
  5. Step 5: Solve for x
    x = 13,958,305,948.43/125,668.64
  6. Step 6: Final answer
    x = 111,072.31

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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.