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Finding the Fourth Proportional to 203,396.73, 280,690.03 and 117,373.57

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Solution

The fourth proportional to 203,396.73, 280,690.03 and 117,373.57 is: 161,976.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,396.73 : 280,690.03 = 117,373.57 : x
  2. Step 2: Convert to fraction form
    203,396.73/280,690.03 = 117,373.57/x
  3. Step 3: Cross multiply
    203,396.73x = 280,690.03 × 117,373.57
  4. Step 4: Simplify right side
    203,396.73x = 32,945,590,559.16
  5. Step 5: Solve for x
    x = 32,945,590,559.16/203,396.73
  6. Step 6: Final answer
    x = 161,976.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.