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Finding the Fourth Proportional to 5,738.86, 7,920.15 and 3,500.86

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Solution

The fourth proportional to 5,738.86, 7,920.15 and 3,500.86 is: 4,831.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,738.86 : 7,920.15 = 3,500.86 : x
  2. Step 2: Convert to fraction form
    5,738.86/7,920.15 = 3,500.86/x
  3. Step 3: Cross multiply
    5,738.86x = 7,920.15 × 3,500.86
  4. Step 4: Simplify right side
    5,738.86x = 27,727,336.33
  5. Step 5: Solve for x
    x = 27,727,336.33/5,738.86
  6. Step 6: Final answer
    x = 4,831.51

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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.