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Finding the Fourth Proportional to 20,366.70, 30,350.03 and 19,697.77

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Solution

The fourth proportional to 20,366.70, 30,350.03 and 19,697.77 is: 29,353.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,366.70 : 30,350.03 = 19,697.77 : x
  2. Step 2: Convert to fraction form
    20,366.70/30,350.03 = 19,697.77/x
  3. Step 3: Cross multiply
    20,366.70x = 30,350.03 × 19,697.77
  4. Step 4: Simplify right side
    20,366.70x = 597,827,910.43
  5. Step 5: Solve for x
    x = 597,827,910.43/20,366.70
  6. Step 6: Final answer
    x = 29,353.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.