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Finding the Fourth Proportional to 208,626.58, 313,068.36 and 82,245.32

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Solution

The fourth proportional to 208,626.58, 313,068.36 and 82,245.32 is: 123,418.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,626.58 : 313,068.36 = 82,245.32 : x
  2. Step 2: Convert to fraction form
    208,626.58/313,068.36 = 82,245.32/x
  3. Step 3: Cross multiply
    208,626.58x = 313,068.36 × 82,245.32
  4. Step 4: Simplify right side
    208,626.58x = 25,748,407,450.08
  5. Step 5: Solve for x
    x = 25,748,407,450.08/208,626.58
  6. Step 6: Final answer
    x = 123,418.63

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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.