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Finding the Fourth Proportional to 20,168.70, 30,195.45 and 19,592.70

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Solution

The fourth proportional to 20,168.70, 30,195.45 and 19,592.70 is: 29,333.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.70 : 30,195.45 = 19,592.70 : x
  2. Step 2: Convert to fraction form
    20,168.70/30,195.45 = 19,592.70/x
  3. Step 3: Cross multiply
    20,168.70x = 30,195.45 × 19,592.70
  4. Step 4: Simplify right side
    20,168.70x = 591,610,393.22
  5. Step 5: Solve for x
    x = 591,610,393.22/20,168.70
  6. Step 6: Final answer
    x = 29,333.10

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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.