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Finding the Fourth Proportional to 231,399.92, 346,703.64 and 126,292.64

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Solution

The fourth proportional to 231,399.92, 346,703.64 and 126,292.64 is: 189,222.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,399.92 : 346,703.64 = 126,292.64 : x
  2. Step 2: Convert to fraction form
    231,399.92/346,703.64 = 126,292.64/x
  3. Step 3: Cross multiply
    231,399.92x = 346,703.64 × 126,292.64
  4. Step 4: Simplify right side
    231,399.92x = 43,786,117,993.21
  5. Step 5: Solve for x
    x = 43,786,117,993.21/231,399.92
  6. Step 6: Final answer
    x = 189,222.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.