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Finding the Fourth Proportional to 7,951.44, 10,972.14 and 4,413.78

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Solution

The fourth proportional to 7,951.44, 10,972.14 and 4,413.78 is: 6,090.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,951.44 : 10,972.14 = 4,413.78 : x
  2. Step 2: Convert to fraction form
    7,951.44/10,972.14 = 4,413.78/x
  3. Step 3: Cross multiply
    7,951.44x = 10,972.14 × 4,413.78
  4. Step 4: Simplify right side
    7,951.44x = 48,428,612.09
  5. Step 5: Solve for x
    x = 48,428,612.09/7,951.44
  6. Step 6: Final answer
    x = 6,090.55

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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.