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Finding the Fourth Proportional to 444,978.78, 666,301.77 and 305,010.78

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Solution

The fourth proportional to 444,978.78, 666,301.77 and 305,010.78 is: 456,716.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,978.78 : 666,301.77 = 305,010.78 : x
  2. Step 2: Convert to fraction form
    444,978.78/666,301.77 = 305,010.78/x
  3. Step 3: Cross multiply
    444,978.78x = 666,301.77 × 305,010.78
  4. Step 4: Simplify right side
    444,978.78x = 203,229,222,583.08
  5. Step 5: Solve for x
    x = 203,229,222,583.08/444,978.78
  6. Step 6: Final answer
    x = 456,716.66

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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.