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Finding the Fourth Proportional to 574,692.21, 793,018.49 and 320,067.09

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Solution

The fourth proportional to 574,692.21, 793,018.49 and 320,067.09 is: 441,660.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,692.21 : 793,018.49 = 320,067.09 : x
  2. Step 2: Convert to fraction form
    574,692.21/793,018.49 = 320,067.09/x
  3. Step 3: Cross multiply
    574,692.21x = 793,018.49 × 320,067.09
  4. Step 4: Simplify right side
    574,692.21x = 253,819,118,810.16
  5. Step 5: Solve for x
    x = 253,819,118,810.16/574,692.21
  6. Step 6: Final answer
    x = 441,660.97

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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.