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Finding the Fourth Proportional to 5,741.22, 7,920.90 and 3,222.98

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Solution

The fourth proportional to 5,741.22, 7,920.90 and 3,222.98 is: 4,446.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,741.22 : 7,920.90 = 3,222.98 : x
  2. Step 2: Convert to fraction form
    5,741.22/7,920.90 = 3,222.98/x
  3. Step 3: Cross multiply
    5,741.22x = 7,920.90 × 3,222.98
  4. Step 4: Simplify right side
    5,741.22x = 25,528,902.28
  5. Step 5: Solve for x
    x = 25,528,902.28/5,741.22
  6. Step 6: Final answer
    x = 4,446.60

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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.