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Finding the Fourth Proportional to 481,692.22, 663,664.59 and 318,057.23

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Solution

The fourth proportional to 481,692.22, 663,664.59 and 318,057.23 is: 438,212.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,692.22 : 663,664.59 = 318,057.23 : x
  2. Step 2: Convert to fraction form
    481,692.22/663,664.59 = 318,057.23/x
  3. Step 3: Cross multiply
    481,692.22x = 663,664.59 × 318,057.23
  4. Step 4: Simplify right side
    481,692.22x = 211,083,322,803.65
  5. Step 5: Solve for x
    x = 211,083,322,803.65/481,692.22
  6. Step 6: Final answer
    x = 438,212.03

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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.