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Finding the Fourth Proportional to 19,840.75, 29,765.04 and 6,696.88

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Solution

The fourth proportional to 19,840.75, 29,765.04 and 6,696.88 is: 10,046.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,840.75 : 29,765.04 = 6,696.88 : x
  2. Step 2: Convert to fraction form
    19,840.75/29,765.04 = 6,696.88/x
  3. Step 3: Cross multiply
    19,840.75x = 29,765.04 × 6,696.88
  4. Step 4: Simplify right side
    19,840.75x = 199,332,901.08
  5. Step 5: Solve for x
    x = 199,332,901.08/19,840.75
  6. Step 6: Final answer
    x = 10,046.64

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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.