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Finding the Fourth Proportional to 86,691.76, 119,614.32 and 50,879.92

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Solution

The fourth proportional to 86,691.76, 119,614.32 and 50,879.92 is: 70,202.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,691.76 : 119,614.32 = 50,879.92 : x
  2. Step 2: Convert to fraction form
    86,691.76/119,614.32 = 50,879.92/x
  3. Step 3: Cross multiply
    86,691.76x = 119,614.32 × 50,879.92
  4. Step 4: Simplify right side
    86,691.76x = 6,085,967,032.45
  5. Step 5: Solve for x
    x = 6,085,967,032.45/86,691.76
  6. Step 6: Final answer
    x = 70,202.37

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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.