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Finding the Fourth Proportional to 25,918.54, 38,883.99 and 8,388.37

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Solution

The fourth proportional to 25,918.54, 38,883.99 and 8,388.37 is: 12,584.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,918.54 : 38,883.99 = 8,388.37 : x
  2. Step 2: Convert to fraction form
    25,918.54/38,883.99 = 8,388.37/x
  3. Step 3: Cross multiply
    25,918.54x = 38,883.99 × 8,388.37
  4. Step 4: Simplify right side
    25,918.54x = 326,173,301.86
  5. Step 5: Solve for x
    x = 326,173,301.86/25,918.54
  6. Step 6: Final answer
    x = 12,584.55

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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.