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Finding the Fourth Proportional to 125,967.20, 188,879.67 and 47,049.30

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Solution

The fourth proportional to 125,967.20, 188,879.67 and 47,049.30 is: 70,547.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,967.20 : 188,879.67 = 47,049.30 : x
  2. Step 2: Convert to fraction form
    125,967.20/188,879.67 = 47,049.30/x
  3. Step 3: Cross multiply
    125,967.20x = 188,879.67 × 47,049.30
  4. Step 4: Simplify right side
    125,967.20x = 8,886,656,257.73
  5. Step 5: Solve for x
    x = 8,886,656,257.73/125,967.20
  6. Step 6: Final answer
    x = 70,547.38

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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.