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Finding the Fourth Proportional to 201,255.20, 302,146.60 and 134,991.80

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Solution

The fourth proportional to 201,255.20, 302,146.60 and 134,991.80 is: 202,664.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,255.20 : 302,146.60 = 134,991.80 : x
  2. Step 2: Convert to fraction form
    201,255.20/302,146.60 = 134,991.80/x
  3. Step 3: Cross multiply
    201,255.20x = 302,146.60 × 134,991.80
  4. Step 4: Simplify right side
    201,255.20x = 40,787,313,397.88
  5. Step 5: Solve for x
    x = 40,787,313,397.88/201,255.20
  6. Step 6: Final answer
    x = 202,664.64

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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.