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Finding the Fourth Proportional to 125,853.44, 188,786.67 and 45,889.55

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Solution

The fourth proportional to 125,853.44, 188,786.67 and 45,889.55 is: 68,836.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,853.44 : 188,786.67 = 45,889.55 : x
  2. Step 2: Convert to fraction form
    125,853.44/188,786.67 = 45,889.55/x
  3. Step 3: Cross multiply
    125,853.44x = 188,786.67 × 45,889.55
  4. Step 4: Simplify right side
    125,853.44x = 8,663,335,332.30
  5. Step 5: Solve for x
    x = 8,663,335,332.30/125,853.44
  6. Step 6: Final answer
    x = 68,836.70

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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.