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Finding the Fourth Proportional to 108,546.90, 162,849.15 and 38,418.90

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Solution

The fourth proportional to 108,546.90, 162,849.15 and 38,418.90 is: 57,638.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,546.90 : 162,849.15 = 38,418.90 : x
  2. Step 2: Convert to fraction form
    108,546.90/162,849.15 = 38,418.90/x
  3. Step 3: Cross multiply
    108,546.90x = 162,849.15 × 38,418.90
  4. Step 4: Simplify right side
    108,546.90x = 6,256,485,208.94
  5. Step 5: Solve for x
    x = 6,256,485,208.94/108,546.90
  6. Step 6: Final answer
    x = 57,638.54

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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.