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Finding the Fourth Proportional to 111,918.20, 167,858.10 and 41,761.40

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Solution

The fourth proportional to 111,918.20, 167,858.10 and 41,761.40 is: 62,634.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,918.20 : 167,858.10 = 41,761.40 : x
  2. Step 2: Convert to fraction form
    111,918.20/167,858.10 = 41,761.40/x
  3. Step 3: Cross multiply
    111,918.20x = 167,858.10 × 41,761.40
  4. Step 4: Simplify right side
    111,918.20x = 7,009,989,257.34
  5. Step 5: Solve for x
    x = 7,009,989,257.34/111,918.20
  6. Step 6: Final answer
    x = 62,634.94

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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.