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Finding the Fourth Proportional to 620,413.44, 930,422.88 and 199,591.36

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Solution

The fourth proportional to 620,413.44, 930,422.88 and 199,591.36 is: 299,323.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,413.44 : 930,422.88 = 199,591.36 : x
  2. Step 2: Convert to fraction form
    620,413.44/930,422.88 = 199,591.36/x
  3. Step 3: Cross multiply
    620,413.44x = 930,422.88 × 199,591.36
  4. Step 4: Simplify right side
    620,413.44x = 185,704,367,994.32
  5. Step 5: Solve for x
    x = 185,704,367,994.32/620,413.44
  6. Step 6: Final answer
    x = 299,323.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.