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Finding the Fourth Proportional to 38,608.13, 57,921.91 and 10,906.13

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Solution

The fourth proportional to 38,608.13, 57,921.91 and 10,906.13 is: 16,361.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,608.13 : 57,921.91 = 10,906.13 : x
  2. Step 2: Convert to fraction form
    38,608.13/57,921.91 = 10,906.13/x
  3. Step 3: Cross multiply
    38,608.13x = 57,921.91 × 10,906.13
  4. Step 4: Simplify right side
    38,608.13x = 631,703,880.31
  5. Step 5: Solve for x
    x = 631,703,880.31/38,608.13
  6. Step 6: Final answer
    x = 16,361.94

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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.