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Finding the Fourth Proportional to 197,704.80, 272,832.15 and 107,060.79

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Solution

The fourth proportional to 197,704.80, 272,832.15 and 107,060.79 is: 147,743.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,704.80 : 272,832.15 = 107,060.79 : x
  2. Step 2: Convert to fraction form
    197,704.80/272,832.15 = 107,060.79/x
  3. Step 3: Cross multiply
    197,704.80x = 272,832.15 × 107,060.79
  4. Step 4: Simplify right side
    197,704.80x = 29,209,625,516.40
  5. Step 5: Solve for x
    x = 29,209,625,516.40/197,704.80
  6. Step 6: Final answer
    x = 147,743.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.