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Finding the Fourth Proportional to 13,951.14, 20,926.43 and 4,090.20

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Solution

The fourth proportional to 13,951.14, 20,926.43 and 4,090.20 is: 6,135.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,951.14 : 20,926.43 = 4,090.20 : x
  2. Step 2: Convert to fraction form
    13,951.14/20,926.43 = 4,090.20/x
  3. Step 3: Cross multiply
    13,951.14x = 20,926.43 × 4,090.20
  4. Step 4: Simplify right side
    13,951.14x = 85,593,283.99
  5. Step 5: Solve for x
    x = 85,593,283.99/13,951.14
  6. Step 6: Final answer
    x = 6,135.22

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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.