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Finding the Fourth Proportional to 111,555.03, 166,914.27 and 66,411.27

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Solution

The fourth proportional to 111,555.03, 166,914.27 and 66,411.27 is: 99,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,555.03 : 166,914.27 = 66,411.27 : x
  2. Step 2: Convert to fraction form
    111,555.03/166,914.27 = 66,411.27/x
  3. Step 3: Cross multiply
    111,555.03x = 166,914.27 × 66,411.27
  4. Step 4: Simplify right side
    111,555.03x = 11,084,988,651.82
  5. Step 5: Solve for x
    x = 11,084,988,651.82/111,555.03
  6. Step 6: Final answer
    x = 99,367.90

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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.