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Finding the Fourth Proportional to 325,907.70, 488,946.60 and 126,234.60

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Solution

The fourth proportional to 325,907.70, 488,946.60 and 126,234.60 is: 189,384.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,907.70 : 488,946.60 = 126,234.60 : x
  2. Step 2: Convert to fraction form
    325,907.70/488,946.60 = 126,234.60/x
  3. Step 3: Cross multiply
    325,907.70x = 488,946.60 × 126,234.60
  4. Step 4: Simplify right side
    325,907.70x = 61,721,978,472.36
  5. Step 5: Solve for x
    x = 61,721,978,472.36/325,907.70
  6. Step 6: Final answer
    x = 189,384.84

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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.