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Finding the Fourth Proportional to 17,690.73, 26,535.74 and 7,157.85

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Solution

The fourth proportional to 17,690.73, 26,535.74 and 7,157.85 is: 10,736.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,690.73 : 26,535.74 = 7,157.85 : x
  2. Step 2: Convert to fraction form
    17,690.73/26,535.74 = 7,157.85/x
  3. Step 3: Cross multiply
    17,690.73x = 26,535.74 × 7,157.85
  4. Step 4: Simplify right side
    17,690.73x = 189,938,810.77
  5. Step 5: Solve for x
    x = 189,938,810.77/17,690.73
  6. Step 6: Final answer
    x = 10,736.63

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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.