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Finding the Fourth Proportional to 552,091.44, 761,791.20 and 310,340.46

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Solution

The fourth proportional to 552,091.44, 761,791.20 and 310,340.46 is: 428,216.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,091.44 : 761,791.20 = 310,340.46 : x
  2. Step 2: Convert to fraction form
    552,091.44/761,791.20 = 310,340.46/x
  3. Step 3: Cross multiply
    552,091.44x = 761,791.20 × 310,340.46
  4. Step 4: Simplify right side
    552,091.44x = 236,414,631,431.95
  5. Step 5: Solve for x
    x = 236,414,631,431.95/552,091.44
  6. Step 6: Final answer
    x = 428,216.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.