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Finding the Fourth Proportional to 312,625.62, 468,842.67 and 112,921.38

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Solution

The fourth proportional to 312,625.62, 468,842.67 and 112,921.38 is: 169,347.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,625.62 : 468,842.67 = 112,921.38 : x
  2. Step 2: Convert to fraction form
    312,625.62/468,842.67 = 112,921.38/x
  3. Step 3: Cross multiply
    312,625.62x = 468,842.67 × 112,921.38
  4. Step 4: Simplify right side
    312,625.62x = 52,942,361,299.28
  5. Step 5: Solve for x
    x = 52,942,361,299.28/312,625.62
  6. Step 6: Final answer
    x = 169,347.48

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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.