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Finding the Fourth Proportional to 185,668.08, 278,415.72 and 67,334.64

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Solution

The fourth proportional to 185,668.08, 278,415.72 and 67,334.64 is: 100,970.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,668.08 : 278,415.72 = 67,334.64 : x
  2. Step 2: Convert to fraction form
    185,668.08/278,415.72 = 67,334.64/x
  3. Step 3: Cross multiply
    185,668.08x = 278,415.72 × 67,334.64
  4. Step 4: Simplify right side
    185,668.08x = 18,747,022,276.54
  5. Step 5: Solve for x
    x = 18,747,022,276.54/185,668.08
  6. Step 6: Final answer
    x = 100,970.63

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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.