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Finding the Fourth Proportional to 84,328.90, 126,493.92 and 25,165.08

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Solution

The fourth proportional to 84,328.90, 126,493.92 and 25,165.08 is: 37,747.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,328.90 : 126,493.92 = 25,165.08 : x
  2. Step 2: Convert to fraction form
    84,328.90/126,493.92 = 25,165.08/x
  3. Step 3: Cross multiply
    84,328.90x = 126,493.92 × 25,165.08
  4. Step 4: Simplify right side
    84,328.90x = 3,183,229,616.31
  5. Step 5: Solve for x
    x = 3,183,229,616.31/84,328.90
  6. Step 6: Final answer
    x = 37,747.79

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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.