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Finding the Fourth Proportional to 20,296.98, 30,416.94 and 15,296.04

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Solution

The fourth proportional to 20,296.98, 30,416.94 and 15,296.04 is: 22,922.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,296.98 : 30,416.94 = 15,296.04 : x
  2. Step 2: Convert to fraction form
    20,296.98/30,416.94 = 15,296.04/x
  3. Step 3: Cross multiply
    20,296.98x = 30,416.94 × 15,296.04
  4. Step 4: Simplify right side
    20,296.98x = 465,258,730.92
  5. Step 5: Solve for x
    x = 465,258,730.92/20,296.98
  6. Step 6: Final answer
    x = 22,922.56

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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.