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Finding the Fourth Proportional to 125,249.58, 187,921.98 and 75,364.11

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Solution

The fourth proportional to 125,249.58, 187,921.98 and 75,364.11 is: 113,074.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,249.58 : 187,921.98 = 75,364.11 : x
  2. Step 2: Convert to fraction form
    125,249.58/187,921.98 = 75,364.11/x
  3. Step 3: Cross multiply
    125,249.58x = 187,921.98 × 75,364.11
  4. Step 4: Simplify right side
    125,249.58x = 14,162,572,772.14
  5. Step 5: Solve for x
    x = 14,162,572,772.14/125,249.58
  6. Step 6: Final answer
    x = 113,074.81

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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.