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Finding the Fourth Proportional to 79,321.76, 118,969.85 and 23,148.68

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Solution

The fourth proportional to 79,321.76, 118,969.85 and 23,148.68 is: 34,719.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,321.76 : 118,969.85 = 23,148.68 : x
  2. Step 2: Convert to fraction form
    79,321.76/118,969.85 = 23,148.68/x
  3. Step 3: Cross multiply
    79,321.76x = 118,969.85 × 23,148.68
  4. Step 4: Simplify right side
    79,321.76x = 2,753,994,987.30
  5. Step 5: Solve for x
    x = 2,753,994,987.30/79,321.76
  6. Step 6: Final answer
    x = 34,719.29

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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.