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Finding the Fourth Proportional to 92,408.90, 138,630.41 and 29,244.90

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Solution

The fourth proportional to 92,408.90, 138,630.41 and 29,244.90 is: 43,872.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,408.90 : 138,630.41 = 29,244.90 : x
  2. Step 2: Convert to fraction form
    92,408.90/138,630.41 = 29,244.90/x
  3. Step 3: Cross multiply
    92,408.90x = 138,630.41 × 29,244.90
  4. Step 4: Simplify right side
    92,408.90x = 4,054,232,331.18
  5. Step 5: Solve for x
    x = 4,054,232,331.18/92,408.90
  6. Step 6: Final answer
    x = 43,872.75

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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.