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Finding the Fourth Proportional to 8,820.69, 12,172.54 and 4,992.26

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Solution

The fourth proportional to 8,820.69, 12,172.54 and 4,992.26 is: 6,889.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,820.69 : 12,172.54 = 4,992.26 : x
  2. Step 2: Convert to fraction form
    8,820.69/12,172.54 = 4,992.26/x
  3. Step 3: Cross multiply
    8,820.69x = 12,172.54 × 4,992.26
  4. Step 4: Simplify right side
    8,820.69x = 60,768,429.92
  5. Step 5: Solve for x
    x = 60,768,429.92/8,820.69
  6. Step 6: Final answer
    x = 6,889.31

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.