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Finding the Fourth Proportional to 84,626.70, 126,939.78 and 25,462.29

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Solution

The fourth proportional to 84,626.70, 126,939.78 and 25,462.29 is: 38,193.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,626.70 : 126,939.78 = 25,462.29 : x
  2. Step 2: Convert to fraction form
    84,626.70/126,939.78 = 25,462.29/x
  3. Step 3: Cross multiply
    84,626.70x = 126,939.78 × 25,462.29
  4. Step 4: Simplify right side
    84,626.70x = 3,232,177,490.90
  5. Step 5: Solve for x
    x = 3,232,177,490.90/84,626.70
  6. Step 6: Final answer
    x = 38,193.35

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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.