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Finding the Fourth Proportional to 70,738.03, 106,092.06 and 20,804.56

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Solution

The fourth proportional to 70,738.03, 106,092.06 and 20,804.56 is: 31,202.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,738.03 : 106,092.06 = 20,804.56 : x
  2. Step 2: Convert to fraction form
    70,738.03/106,092.06 = 20,804.56/x
  3. Step 3: Cross multiply
    70,738.03x = 106,092.06 × 20,804.56
  4. Step 4: Simplify right side
    70,738.03x = 2,207,198,627.79
  5. Step 5: Solve for x
    x = 2,207,198,627.79/70,738.03
  6. Step 6: Final answer
    x = 31,202.43

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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.