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Finding the Fourth Proportional to 120,795.86, 166,698.61 and 67,080.91

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Solution

The fourth proportional to 120,795.86, 166,698.61 and 67,080.91 is: 92,571.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,795.86 : 166,698.61 = 67,080.91 : x
  2. Step 2: Convert to fraction form
    120,795.86/166,698.61 = 67,080.91/x
  3. Step 3: Cross multiply
    120,795.86x = 166,698.61 × 67,080.91
  4. Step 4: Simplify right side
    120,795.86x = 11,182,294,182.65
  5. Step 5: Solve for x
    x = 11,182,294,182.65/120,795.86
  6. Step 6: Final answer
    x = 92,571.84

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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.