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Finding the Fourth Proportional to 113,147.63, 169,721.43 and 28,907.97

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Solution

The fourth proportional to 113,147.63, 169,721.43 and 28,907.97 is: 43,361.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,147.63 : 169,721.43 = 28,907.97 : x
  2. Step 2: Convert to fraction form
    113,147.63/169,721.43 = 28,907.97/x
  3. Step 3: Cross multiply
    113,147.63x = 169,721.43 × 28,907.97
  4. Step 4: Simplify right side
    113,147.63x = 4,906,302,006.80
  5. Step 5: Solve for x
    x = 4,906,302,006.80/113,147.63
  6. Step 6: Final answer
    x = 43,361.95

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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.