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Finding the Fourth Proportional to 70,481.08, 105,514.26 and 47,049.40

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Solution

The fourth proportional to 70,481.08, 105,514.26 and 47,049.40 is: 70,435.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,481.08 : 105,514.26 = 47,049.40 : x
  2. Step 2: Convert to fraction form
    70,481.08/105,514.26 = 47,049.40/x
  3. Step 3: Cross multiply
    70,481.08x = 105,514.26 × 47,049.40
  4. Step 4: Simplify right side
    70,481.08x = 4,964,382,624.44
  5. Step 5: Solve for x
    x = 4,964,382,624.44/70,481.08
  6. Step 6: Final answer
    x = 70,435.68

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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.