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Finding the Fourth Proportional to 33,136.34, 45,729.34 and 18,991.88

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Solution

The fourth proportional to 33,136.34, 45,729.34 and 18,991.88 is: 26,209.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,136.34 : 45,729.34 = 18,991.88 : x
  2. Step 2: Convert to fraction form
    33,136.34/45,729.34 = 18,991.88/x
  3. Step 3: Cross multiply
    33,136.34x = 45,729.34 × 18,991.88
  4. Step 4: Simplify right side
    33,136.34x = 868,486,137.76
  5. Step 5: Solve for x
    x = 868,486,137.76/33,136.34
  6. Step 6: Final answer
    x = 26,209.48

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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.