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Finding the Fourth Proportional to 5,791.74, 7,992.63 and 3,139.14

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Solution

The fourth proportional to 5,791.74, 7,992.63 and 3,139.14 is: 4,332.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,791.74 : 7,992.63 = 3,139.14 : x
  2. Step 2: Convert to fraction form
    5,791.74/7,992.63 = 3,139.14/x
  3. Step 3: Cross multiply
    5,791.74x = 7,992.63 × 3,139.14
  4. Step 4: Simplify right side
    5,791.74x = 25,089,984.54
  5. Step 5: Solve for x
    x = 25,089,984.54/5,791.74
  6. Step 6: Final answer
    x = 4,332.03

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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.