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Finding the Fourth Proportional to 125,154.62, 172,713.53 and 67,794.57

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Solution

The fourth proportional to 125,154.62, 172,713.53 and 67,794.57 is: 93,556.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,154.62 : 172,713.53 = 67,794.57 : x
  2. Step 2: Convert to fraction form
    125,154.62/172,713.53 = 67,794.57/x
  3. Step 3: Cross multiply
    125,154.62x = 172,713.53 × 67,794.57
  4. Step 4: Simplify right side
    125,154.62x = 11,709,039,669.02
  5. Step 5: Solve for x
    x = 11,709,039,669.02/125,154.62
  6. Step 6: Final answer
    x = 93,556.59

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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.