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Finding the Fourth Proportional to 189,383.64, 261,481.52 and 117,795.84

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Solution

The fourth proportional to 189,383.64, 261,481.52 and 117,795.84 is: 162,640.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,383.64 : 261,481.52 = 117,795.84 : x
  2. Step 2: Convert to fraction form
    189,383.64/261,481.52 = 117,795.84/x
  3. Step 3: Cross multiply
    189,383.64x = 261,481.52 × 117,795.84
  4. Step 4: Simplify right side
    189,383.64x = 30,801,435,292.88
  5. Step 5: Solve for x
    x = 30,801,435,292.88/189,383.64
  6. Step 6: Final answer
    x = 162,640.42

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1.5x scale

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.