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Finding the Fourth Proportional to 50,791.91, 76,187.05 and 13,855.91

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Solution

The fourth proportional to 50,791.91, 76,187.05 and 13,855.91 is: 20,783.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,791.91 : 76,187.05 = 13,855.91 : x
  2. Step 2: Convert to fraction form
    50,791.91/76,187.05 = 13,855.91/x
  3. Step 3: Cross multiply
    50,791.91x = 76,187.05 × 13,855.91
  4. Step 4: Simplify right side
    50,791.91x = 1,055,640,492.39
  5. Step 5: Solve for x
    x = 1,055,640,492.39/50,791.91
  6. Step 6: Final answer
    x = 20,783.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.