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Finding the Fourth Proportional to 5,534.40, 7,621.92 and 5,413.44

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Solution

The fourth proportional to 5,534.40, 7,621.92 and 5,413.44 is: 7,455.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,534.40 : 7,621.92 = 5,413.44 : x
  2. Step 2: Convert to fraction form
    5,534.40/7,621.92 = 5,413.44/x
  3. Step 3: Cross multiply
    5,534.40x = 7,621.92 × 5,413.44
  4. Step 4: Simplify right side
    5,534.40x = 41,260,806.60
  5. Step 5: Solve for x
    x = 41,260,806.60/5,534.40
  6. Step 6: Final answer
    x = 7,455.34

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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.