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Finding the Fourth Proportional to 111,259.88, 166,811.42 and 41,129.96

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Solution

The fourth proportional to 111,259.88, 166,811.42 and 41,129.96 is: 61,665.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,259.88 : 166,811.42 = 41,129.96 : x
  2. Step 2: Convert to fraction form
    111,259.88/166,811.42 = 41,129.96/x
  3. Step 3: Cross multiply
    111,259.88x = 166,811.42 × 41,129.96
  4. Step 4: Simplify right side
    111,259.88x = 6,860,947,032.14
  5. Step 5: Solve for x
    x = 6,860,947,032.14/111,259.88
  6. Step 6: Final answer
    x = 61,665.96

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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.