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Finding the Fourth Proportional to 25,836.62, 35,657.06 and 15,771.79

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Solution

The fourth proportional to 25,836.62, 35,657.06 and 15,771.79 is: 21,766.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,836.62 : 35,657.06 = 15,771.79 : x
  2. Step 2: Convert to fraction form
    25,836.62/35,657.06 = 15,771.79/x
  3. Step 3: Cross multiply
    25,836.62x = 35,657.06 × 15,771.79
  4. Step 4: Simplify right side
    25,836.62x = 562,375,616.48
  5. Step 5: Solve for x
    x = 562,375,616.48/25,836.62
  6. Step 6: Final answer
    x = 21,766.61

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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.