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Finding the Fourth Proportional to 25,984.91, 38,992.74 and 10,991.18

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Solution

The fourth proportional to 25,984.91, 38,992.74 and 10,991.18 is: 16,493.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,984.91 : 38,992.74 = 10,991.18 : x
  2. Step 2: Convert to fraction form
    25,984.91/38,992.74 = 10,991.18/x
  3. Step 3: Cross multiply
    25,984.91x = 38,992.74 × 10,991.18
  4. Step 4: Simplify right side
    25,984.91x = 428,576,224.03
  5. Step 5: Solve for x
    x = 428,576,224.03/25,984.91
  6. Step 6: Final answer
    x = 16,493.27

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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.