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Finding the Fourth Proportional to 78,370.78, 117,560.62 and 25,067.44

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Solution

The fourth proportional to 78,370.78, 117,560.62 and 25,067.44 is: 37,602.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,370.78 : 117,560.62 = 25,067.44 : x
  2. Step 2: Convert to fraction form
    78,370.78/117,560.62 = 25,067.44/x
  3. Step 3: Cross multiply
    78,370.78x = 117,560.62 × 25,067.44
  4. Step 4: Simplify right side
    78,370.78x = 2,946,943,825.49
  5. Step 5: Solve for x
    x = 2,946,943,825.49/78,370.78
  6. Step 6: Final answer
    x = 37,602.58

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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.