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Finding the Fourth Proportional to 125,894.27, 188,786.03 and 66,716.10

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Solution

The fourth proportional to 125,894.27, 188,786.03 and 66,716.10 is: 100,044.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,894.27 : 188,786.03 = 66,716.10 : x
  2. Step 2: Convert to fraction form
    125,894.27/188,786.03 = 66,716.10/x
  3. Step 3: Cross multiply
    125,894.27x = 188,786.03 × 66,716.10
  4. Step 4: Simplify right side
    125,894.27x = 12,595,067,656.08
  5. Step 5: Solve for x
    x = 12,595,067,656.08/125,894.27
  6. Step 6: Final answer
    x = 100,044.80

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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.