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Finding the Fourth Proportional to 52,992.78, 79,316.10 and 38,949.09

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Solution

The fourth proportional to 52,992.78, 79,316.10 and 38,949.09 is: 58,296.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,992.78 : 79,316.10 = 38,949.09 : x
  2. Step 2: Convert to fraction form
    52,992.78/79,316.10 = 38,949.09/x
  3. Step 3: Cross multiply
    52,992.78x = 79,316.10 × 38,949.09
  4. Step 4: Simplify right side
    52,992.78x = 3,089,289,917.35
  5. Step 5: Solve for x
    x = 3,089,289,917.35/52,992.78
  6. Step 6: Final answer
    x = 58,296.43

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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.