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Finding the Fourth Proportional to 312,326.76, 468,577.62 and 125,469.48

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Solution

The fourth proportional to 312,326.76, 468,577.62 and 125,469.48 is: 188,239.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,326.76 : 468,577.62 = 125,469.48 : x
  2. Step 2: Convert to fraction form
    312,326.76/468,577.62 = 125,469.48/x
  3. Step 3: Cross multiply
    312,326.76x = 468,577.62 × 125,469.48
  4. Step 4: Simplify right side
    312,326.76x = 58,792,190,321.04
  5. Step 5: Solve for x
    x = 58,792,190,321.04/312,326.76
  6. Step 6: Final answer
    x = 188,239.36

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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.