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Finding the Fourth Proportional to 8,791.12, 12,127.22 and 5,957.54

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Solution

The fourth proportional to 8,791.12, 12,127.22 and 5,957.54 is: 8,218.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.12 : 12,127.22 = 5,957.54 : x
  2. Step 2: Convert to fraction form
    8,791.12/12,127.22 = 5,957.54/x
  3. Step 3: Cross multiply
    8,791.12x = 12,127.22 × 5,957.54
  4. Step 4: Simplify right side
    8,791.12x = 72,248,398.24
  5. Step 5: Solve for x
    x = 72,248,398.24/8,791.12
  6. Step 6: Final answer
    x = 8,218.34

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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.