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Finding the Fourth Proportional to 133,694.70, 184,429.71 and 90,659.64

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Solution

The fourth proportional to 133,694.70, 184,429.71 and 90,659.64 is: 125,063.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,694.70 : 184,429.71 = 90,659.64 : x
  2. Step 2: Convert to fraction form
    133,694.70/184,429.71 = 90,659.64/x
  3. Step 3: Cross multiply
    133,694.70x = 184,429.71 × 90,659.64
  4. Step 4: Simplify right side
    133,694.70x = 16,720,331,113.90
  5. Step 5: Solve for x
    x = 16,720,331,113.90/133,694.70
  6. Step 6: Final answer
    x = 125,063.53

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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.