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Finding the Fourth Proportional to 79,142.60, 118,679.16 and 23,725.64

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Solution

The fourth proportional to 79,142.60, 118,679.16 and 23,725.64 is: 35,578.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,142.60 : 118,679.16 = 23,725.64 : x
  2. Step 2: Convert to fraction form
    79,142.60/118,679.16 = 23,725.64/x
  3. Step 3: Cross multiply
    79,142.60x = 118,679.16 × 23,725.64
  4. Step 4: Simplify right side
    79,142.60x = 2,815,739,025.66
  5. Step 5: Solve for x
    x = 2,815,739,025.66/79,142.60
  6. Step 6: Final answer
    x = 35,578.05

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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.