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Finding the Fourth Proportional to 14,621.01, 20,176.94 and 7,906.61

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Solution

The fourth proportional to 14,621.01, 20,176.94 and 7,906.61 is: 10,911.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,621.01 : 20,176.94 = 7,906.61 : x
  2. Step 2: Convert to fraction form
    14,621.01/20,176.94 = 7,906.61/x
  3. Step 3: Cross multiply
    14,621.01x = 20,176.94 × 7,906.61
  4. Step 4: Simplify right side
    14,621.01x = 159,531,195.57
  5. Step 5: Solve for x
    x = 159,531,195.57/14,621.01
  6. Step 6: Final answer
    x = 10,911.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.