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Finding the Fourth Proportional to 8,762.16, 12,092.44 and 4,986.55

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Solution

The fourth proportional to 8,762.16, 12,092.44 and 4,986.55 is: 6,881.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.16 : 12,092.44 = 4,986.55 : x
  2. Step 2: Convert to fraction form
    8,762.16/12,092.44 = 4,986.55/x
  3. Step 3: Cross multiply
    8,762.16x = 12,092.44 × 4,986.55
  4. Step 4: Simplify right side
    8,762.16x = 60,299,556.68
  5. Step 5: Solve for x
    x = 60,299,556.68/8,762.16
  6. Step 6: Final answer
    x = 6,881.81

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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.