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Finding the Fourth Proportional to 325,676.70, 488,601.45 and 115,292.70

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Solution

The fourth proportional to 325,676.70, 488,601.45 and 115,292.70 is: 172,969.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,676.70 : 488,601.45 = 115,292.70 : x
  2. Step 2: Convert to fraction form
    325,676.70/488,601.45 = 115,292.70/x
  3. Step 3: Cross multiply
    325,676.70x = 488,601.45 × 115,292.70
  4. Step 4: Simplify right side
    325,676.70x = 56,332,180,394.42
  5. Step 5: Solve for x
    x = 56,332,180,394.42/325,676.70
  6. Step 6: Final answer
    x = 172,969.64

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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.