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Finding the Fourth Proportional to 7,791.22, 10,746.43 and 5,272.22

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Solution

The fourth proportional to 7,791.22, 10,746.43 and 5,272.22 is: 7,271.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.22 : 10,746.43 = 5,272.22 : x
  2. Step 2: Convert to fraction form
    7,791.22/10,746.43 = 5,272.22/x
  3. Step 3: Cross multiply
    7,791.22x = 10,746.43 × 5,272.22
  4. Step 4: Simplify right side
    7,791.22x = 56,657,556.86
  5. Step 5: Solve for x
    x = 56,657,556.86/7,791.22
  6. Step 6: Final answer
    x = 7,271.97

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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.