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Finding the Fourth Proportional to 111,243.78, 166,855.95 and 41,123.70

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Solution

The fourth proportional to 111,243.78, 166,855.95 and 41,123.70 is: 61,681.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,243.78 : 166,855.95 = 41,123.70 : x
  2. Step 2: Convert to fraction form
    111,243.78/166,855.95 = 41,123.70/x
  3. Step 3: Cross multiply
    111,243.78x = 166,855.95 × 41,123.70
  4. Step 4: Simplify right side
    111,243.78x = 6,861,734,031.02
  5. Step 5: Solve for x
    x = 6,861,734,031.02/111,243.78
  6. Step 6: Final answer
    x = 61,681.96

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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.