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Finding the Fourth Proportional to 7,791.17, 10,751.87 and 4,254.47

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Solution

The fourth proportional to 7,791.17, 10,751.87 and 4,254.47 is: 5,871.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.17 : 10,751.87 = 4,254.47 : x
  2. Step 2: Convert to fraction form
    7,791.17/10,751.87 = 4,254.47/x
  3. Step 3: Cross multiply
    7,791.17x = 10,751.87 × 4,254.47
  4. Step 4: Simplify right side
    7,791.17x = 45,743,433.33
  5. Step 5: Solve for x
    x = 45,743,433.33/7,791.17
  6. Step 6: Final answer
    x = 5,871.19

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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.