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Finding the Fourth Proportional to 92,163.76, 138,255.51 and 25,604.08

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Solution

The fourth proportional to 92,163.76, 138,255.51 and 25,604.08 is: 38,408.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,163.76 : 138,255.51 = 25,604.08 : x
  2. Step 2: Convert to fraction form
    92,163.76/138,255.51 = 25,604.08/x
  3. Step 3: Cross multiply
    92,163.76x = 138,255.51 × 25,604.08
  4. Step 4: Simplify right side
    92,163.76x = 3,539,905,138.48
  5. Step 5: Solve for x
    x = 3,539,905,138.48/92,163.76
  6. Step 6: Final answer
    x = 38,408.86

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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.