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Finding the Fourth Proportional to 36,788.50, 50,768.94 and 20,021.50

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Solution

The fourth proportional to 36,788.50, 50,768.94 and 20,021.50 is: 27,630.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,788.50 : 50,768.94 = 20,021.50 : x
  2. Step 2: Convert to fraction form
    36,788.50/50,768.94 = 20,021.50/x
  3. Step 3: Cross multiply
    36,788.50x = 50,768.94 × 20,021.50
  4. Step 4: Simplify right side
    36,788.50x = 1,016,470,332.21
  5. Step 5: Solve for x
    x = 1,016,470,332.21/36,788.50
  6. Step 6: Final answer
    x = 27,630.11

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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.