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Finding the Fourth Proportional to 7,183.86, 9,913.95 and 4,040.22

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Solution

The fourth proportional to 7,183.86, 9,913.95 and 4,040.22 is: 5,575.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,183.86 : 9,913.95 = 4,040.22 : x
  2. Step 2: Convert to fraction form
    7,183.86/9,913.95 = 4,040.22/x
  3. Step 3: Cross multiply
    7,183.86x = 9,913.95 × 4,040.22
  4. Step 4: Simplify right side
    7,183.86x = 40,054,539.07
  5. Step 5: Solve for x
    x = 40,054,539.07/7,183.86
  6. Step 6: Final answer
    x = 5,575.63

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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.