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Finding the Fourth Proportional to 20,608.65, 30,922.83 and 14,293.22

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Solution

The fourth proportional to 20,608.65, 30,922.83 and 14,293.22 is: 21,446.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,608.65 : 30,922.83 = 14,293.22 : x
  2. Step 2: Convert to fraction form
    20,608.65/30,922.83 = 14,293.22/x
  3. Step 3: Cross multiply
    20,608.65x = 30,922.83 × 14,293.22
  4. Step 4: Simplify right side
    20,608.65x = 441,986,657.60
  5. Step 5: Solve for x
    x = 441,986,657.60/20,608.65
  6. Step 6: Final answer
    x = 21,446.66

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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.