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Finding the Fourth Proportional to 33,712.20, 50,609.90 and 21,232.20

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Solution

The fourth proportional to 33,712.20, 50,609.90 and 21,232.20 is: 31,874.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,712.20 : 50,609.90 = 21,232.20 : x
  2. Step 2: Convert to fraction form
    33,712.20/50,609.90 = 21,232.20/x
  3. Step 3: Cross multiply
    33,712.20x = 50,609.90 × 21,232.20
  4. Step 4: Simplify right side
    33,712.20x = 1,074,559,518.78
  5. Step 5: Solve for x
    x = 1,074,559,518.78/33,712.20
  6. Step 6: Final answer
    x = 31,874.50

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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.