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Finding the Fourth Proportional to 20,170.01, 30,250.97 and 19,169.76

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Solution

The fourth proportional to 20,170.01, 30,250.97 and 19,169.76 is: 28,750.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.01 : 30,250.97 = 19,169.76 : x
  2. Step 2: Convert to fraction form
    20,170.01/30,250.97 = 19,169.76/x
  3. Step 3: Cross multiply
    20,170.01x = 30,250.97 × 19,169.76
  4. Step 4: Simplify right side
    20,170.01x = 579,903,924.15
  5. Step 5: Solve for x
    x = 579,903,924.15/20,170.01
  6. Step 6: Final answer
    x = 28,750.80

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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.