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Finding the Fourth Proportional to 9,393.10, 12,963.93 and 5,413.90

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Solution

The fourth proportional to 9,393.10, 12,963.93 and 5,413.90 is: 7,472.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,393.10 : 12,963.93 = 5,413.90 : x
  2. Step 2: Convert to fraction form
    9,393.10/12,963.93 = 5,413.90/x
  3. Step 3: Cross multiply
    9,393.10x = 12,963.93 × 5,413.90
  4. Step 4: Simplify right side
    9,393.10x = 70,185,420.63
  5. Step 5: Solve for x
    x = 70,185,420.63/9,393.10
  6. Step 6: Final answer
    x = 7,472.02

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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.