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Finding the Fourth Proportional to 25,958.57, 38,968.70 and 21,849.71

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Solution

The fourth proportional to 25,958.57, 38,968.70 and 21,849.71 is: 32,800.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,958.57 : 38,968.70 = 21,849.71 : x
  2. Step 2: Convert to fraction form
    25,958.57/38,968.70 = 21,849.71/x
  3. Step 3: Cross multiply
    25,958.57x = 38,968.70 × 21,849.71
  4. Step 4: Simplify right side
    25,958.57x = 851,454,489.98
  5. Step 5: Solve for x
    x = 851,454,489.98/25,958.57
  6. Step 6: Final answer
    x = 32,800.52

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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.