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Finding the Fourth Proportional to 189,066.45, 260,917.26 and 104,188.98

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Solution

The fourth proportional to 189,066.45, 260,917.26 and 104,188.98 is: 143,783.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,066.45 : 260,917.26 = 104,188.98 : x
  2. Step 2: Convert to fraction form
    189,066.45/260,917.26 = 104,188.98/x
  3. Step 3: Cross multiply
    189,066.45x = 260,917.26 × 104,188.98
  4. Step 4: Simplify right side
    189,066.45x = 27,184,703,183.79
  5. Step 5: Solve for x
    x = 27,184,703,183.79/189,066.45
  6. Step 6: Final answer
    x = 143,783.86

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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.