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Finding the Fourth Proportional to 96,831, 145,246.50 and 31,167

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Solution

The fourth proportional to 96,831, 145,246.50 and 31,167 is: 46,750.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,831 : 145,246.50 = 31,167 : x
  2. Step 2: Convert to fraction form
    96,831/145,246.50 = 31,167/x
  3. Step 3: Cross multiply
    96,831x = 145,246.50 × 31,167
  4. Step 4: Simplify right side
    96,831x = 4,526,897,665.50
  5. Step 5: Solve for x
    x = 4,526,897,665.50/96,831
  6. Step 6: Final answer
    x = 46,750.50

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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.