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Finding the Fourth Proportional to 8,739.59, 13,092.21 and 5,768.98

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Solution

The fourth proportional to 8,739.59, 13,092.21 and 5,768.98 is: 8,642.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739.59 : 13,092.21 = 5,768.98 : x
  2. Step 2: Convert to fraction form
    8,739.59/13,092.21 = 5,768.98/x
  3. Step 3: Cross multiply
    8,739.59x = 13,092.21 × 5,768.98
  4. Step 4: Simplify right side
    8,739.59x = 75,528,664.92
  5. Step 5: Solve for x
    x = 75,528,664.92/8,739.59
  6. Step 6: Final answer
    x = 8,642.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.