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Finding the Fourth Proportional to 70,642.56, 106,003.20 and 60,301.44

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Solution

The fourth proportional to 70,642.56, 106,003.20 and 60,301.44 is: 90,485.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,642.56 : 106,003.20 = 60,301.44 : x
  2. Step 2: Convert to fraction form
    70,642.56/106,003.20 = 60,301.44/x
  3. Step 3: Cross multiply
    70,642.56x = 106,003.20 × 60,301.44
  4. Step 4: Simplify right side
    70,642.56x = 6,392,145,604.61
  5. Step 5: Solve for x
    x = 6,392,145,604.61/70,642.56
  6. Step 6: Final answer
    x = 90,485.76

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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.