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Finding the Fourth Proportional to 8,608.92, 11,879.34 and 4,831.32

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Solution

The fourth proportional to 8,608.92, 11,879.34 and 4,831.32 is: 6,666.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,608.92 : 11,879.34 = 4,831.32 : x
  2. Step 2: Convert to fraction form
    8,608.92/11,879.34 = 4,831.32/x
  3. Step 3: Cross multiply
    8,608.92x = 11,879.34 × 4,831.32
  4. Step 4: Simplify right side
    8,608.92x = 57,392,892.93
  5. Step 5: Solve for x
    x = 57,392,892.93/8,608.92
  6. Step 6: Final answer
    x = 6,666.68

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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.