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Finding the Fourth Proportional to 111,021.60, 166,574.21 and 66,679.26

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Solution

The fourth proportional to 111,021.60, 166,574.21 and 66,679.26 is: 100,044.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,021.60 : 166,574.21 = 66,679.26 : x
  2. Step 2: Convert to fraction form
    111,021.60/166,574.21 = 66,679.26/x
  3. Step 3: Cross multiply
    111,021.60x = 166,574.21 × 66,679.26
  4. Step 4: Simplify right side
    111,021.60x = 11,107,044,724.49
  5. Step 5: Solve for x
    x = 11,107,044,724.49/111,021.60
  6. Step 6: Final answer
    x = 100,044.00

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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.