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Finding the Fourth Proportional to 36,879.84, 50,894.19 and 20,963.88

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Solution

The fourth proportional to 36,879.84, 50,894.19 and 20,963.88 is: 28,930.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,879.84 : 50,894.19 = 20,963.88 : x
  2. Step 2: Convert to fraction form
    36,879.84/50,894.19 = 20,963.88/x
  3. Step 3: Cross multiply
    36,879.84x = 50,894.19 × 20,963.88
  4. Step 4: Simplify right side
    36,879.84x = 1,066,939,691.86
  5. Step 5: Solve for x
    x = 1,066,939,691.86/36,879.84
  6. Step 6: Final answer
    x = 28,930.16

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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.