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Finding the Fourth Proportional to 20,614.44, 30,921.04 and 17,832.90

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Solution

The fourth proportional to 20,614.44, 30,921.04 and 17,832.90 is: 26,748.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,614.44 : 30,921.04 = 17,832.90 : x
  2. Step 2: Convert to fraction form
    20,614.44/30,921.04 = 17,832.90/x
  3. Step 3: Cross multiply
    20,614.44x = 30,921.04 × 17,832.90
  4. Step 4: Simplify right side
    20,614.44x = 551,411,814.22
  5. Step 5: Solve for x
    x = 551,411,814.22/20,614.44
  6. Step 6: Final answer
    x = 26,748.81

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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.