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Finding the Fourth Proportional to 5,831.70, 8,047.63 and 3,179.12

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Solution

The fourth proportional to 5,831.70, 8,047.63 and 3,179.12 is: 4,387.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,831.70 : 8,047.63 = 3,179.12 : x
  2. Step 2: Convert to fraction form
    5,831.70/8,047.63 = 3,179.12/x
  3. Step 3: Cross multiply
    5,831.70x = 8,047.63 × 3,179.12
  4. Step 4: Simplify right side
    5,831.70x = 25,584,404.18
  5. Step 5: Solve for x
    x = 25,584,404.18/5,831.70
  6. Step 6: Final answer
    x = 4,387.13

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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.