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Finding the Fourth Proportional to 120,668.54, 166,522.57 and 66,953.93

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Solution

The fourth proportional to 120,668.54, 166,522.57 and 66,953.93 is: 92,396.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,668.54 : 166,522.57 = 66,953.93 : x
  2. Step 2: Convert to fraction form
    120,668.54/166,522.57 = 66,953.93/x
  3. Step 3: Cross multiply
    120,668.54x = 166,522.57 × 66,953.93
  4. Step 4: Simplify right side
    120,668.54x = 11,149,339,495.20
  5. Step 5: Solve for x
    x = 11,149,339,495.20/120,668.54
  6. Step 6: Final answer
    x = 92,396.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.