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Finding the Fourth Proportional to 86,793.50, 119,786.38 and 49,067.76

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Solution

The fourth proportional to 86,793.50, 119,786.38 and 49,067.76 is: 67,719.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,793.50 : 119,786.38 = 49,067.76 : x
  2. Step 2: Convert to fraction form
    86,793.50/119,786.38 = 49,067.76/x
  3. Step 3: Cross multiply
    86,793.50x = 119,786.38 × 49,067.76
  4. Step 4: Simplify right side
    86,793.50x = 5,877,649,345.11
  5. Step 5: Solve for x
    x = 5,877,649,345.11/86,793.50
  6. Step 6: Final answer
    x = 67,719.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.