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Finding the Fourth Proportional to 125,067.53, 172,593 and 67,706.57

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Solution

The fourth proportional to 125,067.53, 172,593 and 67,706.57 is: 93,434.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,067.53 : 172,593 = 67,706.57 : x
  2. Step 2: Convert to fraction form
    125,067.53/172,593 = 67,706.57/x
  3. Step 3: Cross multiply
    125,067.53x = 172,593 × 67,706.57
  4. Step 4: Simplify right side
    125,067.53x = 11,685,680,036.01
  5. Step 5: Solve for x
    x = 11,685,680,036.01/125,067.53
  6. Step 6: Final answer
    x = 93,434.96

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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.