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Finding the Fourth Proportional to 111,065.88, 166,524.68 and 61,169.60

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Solution

The fourth proportional to 111,065.88, 166,524.68 and 61,169.60 is: 91,713.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,065.88 : 166,524.68 = 61,169.60 : x
  2. Step 2: Convert to fraction form
    111,065.88/166,524.68 = 61,169.60/x
  3. Step 3: Cross multiply
    111,065.88x = 166,524.68 × 61,169.60
  4. Step 4: Simplify right side
    111,065.88x = 10,186,248,065.73
  5. Step 5: Solve for x
    x = 10,186,248,065.73/111,065.88
  6. Step 6: Final answer
    x = 91,713.57

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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.