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Finding the Fourth Proportional to 5,674.93, 7,831.82 and 3,157.25

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Solution

The fourth proportional to 5,674.93, 7,831.82 and 3,157.25 is: 4,357.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,674.93 : 7,831.82 = 3,157.25 : x
  2. Step 2: Convert to fraction form
    5,674.93/7,831.82 = 3,157.25/x
  3. Step 3: Cross multiply
    5,674.93x = 7,831.82 × 3,157.25
  4. Step 4: Simplify right side
    5,674.93x = 24,726,982.43
  5. Step 5: Solve for x
    x = 24,726,982.43/5,674.93
  6. Step 6: Final answer
    x = 4,357.23

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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.