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Finding the Fourth Proportional to 25,935.99, 38,906.43 and 20,099.13

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Solution

The fourth proportional to 25,935.99, 38,906.43 and 20,099.13 is: 30,150.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,935.99 : 38,906.43 = 20,099.13 : x
  2. Step 2: Convert to fraction form
    25,935.99/38,906.43 = 20,099.13/x
  3. Step 3: Cross multiply
    25,935.99x = 38,906.43 × 20,099.13
  4. Step 4: Simplify right side
    25,935.99x = 781,985,394.41
  5. Step 5: Solve for x
    x = 781,985,394.41/25,935.99
  6. Step 6: Final answer
    x = 30,150.59

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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.