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Finding the Fourth Proportional to 131,604.88, 197,494.80 and 61,489.66

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Solution

The fourth proportional to 131,604.88, 197,494.80 and 61,489.66 is: 92,275.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,604.88 : 197,494.80 = 61,489.66 : x
  2. Step 2: Convert to fraction form
    131,604.88/197,494.80 = 61,489.66/x
  3. Step 3: Cross multiply
    131,604.88x = 197,494.80 × 61,489.66
  4. Step 4: Simplify right side
    131,604.88x = 12,143,888,103.77
  5. Step 5: Solve for x
    x = 12,143,888,103.77/131,604.88
  6. Step 6: Final answer
    x = 92,275.36

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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.