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Finding the Fourth Proportional to 7,083.92, 9,775.21 and 4,099.94

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Solution

The fourth proportional to 7,083.92, 9,775.21 and 4,099.94 is: 5,657.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,083.92 : 9,775.21 = 4,099.94 : x
  2. Step 2: Convert to fraction form
    7,083.92/9,775.21 = 4,099.94/x
  3. Step 3: Cross multiply
    7,083.92x = 9,775.21 × 4,099.94
  4. Step 4: Simplify right side
    7,083.92x = 40,077,744.33
  5. Step 5: Solve for x
    x = 40,077,744.33/7,083.92
  6. Step 6: Final answer
    x = 5,657.57

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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.