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Finding the Fourth Proportional to 203,559.76, 280,912.72 and 118,693.22

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Solution

The fourth proportional to 203,559.76, 280,912.72 and 118,693.22 is: 163,796.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,559.76 : 280,912.72 = 118,693.22 : x
  2. Step 2: Convert to fraction form
    203,559.76/280,912.72 = 118,693.22/x
  3. Step 3: Cross multiply
    203,559.76x = 280,912.72 × 118,693.22
  4. Step 4: Simplify right side
    203,559.76x = 33,342,435,275.76
  5. Step 5: Solve for x
    x = 33,342,435,275.76/203,559.76
  6. Step 6: Final answer
    x = 163,796.79

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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.