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Finding the Fourth Proportional to 7,791.80, 10,751.94 and 4,647.38

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Solution

The fourth proportional to 7,791.80, 10,751.94 and 4,647.38 is: 6,412.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.80 : 10,751.94 = 4,647.38 : x
  2. Step 2: Convert to fraction form
    7,791.80/10,751.94 = 4,647.38/x
  3. Step 3: Cross multiply
    7,791.80x = 10,751.94 × 4,647.38
  4. Step 4: Simplify right side
    7,791.80x = 49,968,297.16
  5. Step 5: Solve for x
    x = 49,968,297.16/7,791.80
  6. Step 6: Final answer
    x = 6,412.94

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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.