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Finding the Fourth Proportional to 404,638.88, 558,413.20 and 223,361.44

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Solution

The fourth proportional to 404,638.88, 558,413.20 and 223,361.44 is: 308,245.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,638.88 : 558,413.20 = 223,361.44 : x
  2. Step 2: Convert to fraction form
    404,638.88/558,413.20 = 223,361.44/x
  3. Step 3: Cross multiply
    404,638.88x = 558,413.20 × 223,361.44
  4. Step 4: Simplify right side
    404,638.88x = 124,727,976,467.01
  5. Step 5: Solve for x
    x = 124,727,976,467.01/404,638.88
  6. Step 6: Final answer
    x = 308,245.16

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1.5x scale

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.