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Finding the Fourth Proportional to 131,963.80, 197,715.30 and 113,531.80

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Solution

The fourth proportional to 131,963.80, 197,715.30 and 113,531.80 is: 170,099.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,963.80 : 197,715.30 = 113,531.80 : x
  2. Step 2: Convert to fraction form
    131,963.80/197,715.30 = 113,531.80/x
  3. Step 3: Cross multiply
    131,963.80x = 197,715.30 × 113,531.80
  4. Step 4: Simplify right side
    131,963.80x = 22,446,973,896.54
  5. Step 5: Solve for x
    x = 22,446,973,896.54/131,963.80
  6. Step 6: Final answer
    x = 170,099.48

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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.