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Finding the Fourth Proportional to 131,603.88, 197,493.30 and 61,488.66

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Solution

The fourth proportional to 131,603.88, 197,493.30 and 61,488.66 is: 92,273.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,603.88 : 197,493.30 = 61,488.66 : x
  2. Step 2: Convert to fraction form
    131,603.88/197,493.30 = 61,488.66/x
  3. Step 3: Cross multiply
    131,603.88x = 197,493.30 × 61,488.66
  4. Step 4: Simplify right side
    131,603.88x = 12,143,598,375.98
  5. Step 5: Solve for x
    x = 12,143,598,375.98/131,603.88
  6. Step 6: Final answer
    x = 92,273.86

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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.