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Finding the Fourth Proportional to 373,413.85, 515,378.24 and 220,443.07

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Solution

The fourth proportional to 373,413.85, 515,378.24 and 220,443.07 is: 304,251.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,413.85 : 515,378.24 = 220,443.07 : x
  2. Step 2: Convert to fraction form
    373,413.85/515,378.24 = 220,443.07/x
  3. Step 3: Cross multiply
    373,413.85x = 515,378.24 × 220,443.07
  4. Step 4: Simplify right side
    373,413.85x = 113,611,562,079.12
  5. Step 5: Solve for x
    x = 113,611,562,079.12/373,413.85
  6. Step 6: Final answer
    x = 304,251.07

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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.