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Finding the Fourth Proportional to 207,394.98, 311,194.13 and 74,285.52

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Solution

The fourth proportional to 207,394.98, 311,194.13 and 74,285.52 is: 111,464.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,394.98 : 311,194.13 = 74,285.52 : x
  2. Step 2: Convert to fraction form
    207,394.98/311,194.13 = 74,285.52/x
  3. Step 3: Cross multiply
    207,394.98x = 311,194.13 × 74,285.52
  4. Step 4: Simplify right side
    207,394.98x = 23,117,217,396.57
  5. Step 5: Solve for x
    x = 23,117,217,396.57/207,394.98
  6. Step 6: Final answer
    x = 111,464.69

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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.