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Finding the Fourth Proportional to 125,078.94, 187,653.49 and 50,251.64

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Solution

The fourth proportional to 125,078.94, 187,653.49 and 50,251.64 is: 75,391.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,078.94 : 187,653.49 = 50,251.64 : x
  2. Step 2: Convert to fraction form
    125,078.94/187,653.49 = 50,251.64/x
  3. Step 3: Cross multiply
    125,078.94x = 187,653.49 × 50,251.64
  4. Step 4: Simplify right side
    125,078.94x = 9,429,894,560.33
  5. Step 5: Solve for x
    x = 9,429,894,560.33/125,078.94
  6. Step 6: Final answer
    x = 75,391.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.