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Finding the Fourth Proportional to 189,141.92, 261,015.88 and 104,260.84

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Solution

The fourth proportional to 189,141.92, 261,015.88 and 104,260.84 is: 143,879.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,141.92 : 261,015.88 = 104,260.84 : x
  2. Step 2: Convert to fraction form
    189,141.92/261,015.88 = 104,260.84/x
  3. Step 3: Cross multiply
    189,141.92x = 261,015.88 × 104,260.84
  4. Step 4: Simplify right side
    189,141.92x = 27,213,734,902.14
  5. Step 5: Solve for x
    x = 27,213,734,902.14/189,141.92
  6. Step 6: Final answer
    x = 143,879.98

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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.