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Finding the Fourth Proportional to 89,112.60, 133,689.86 and 25,934.09

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Solution

The fourth proportional to 89,112.60, 133,689.86 and 25,934.09 is: 38,907.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,112.60 : 133,689.86 = 25,934.09 : x
  2. Step 2: Convert to fraction form
    89,112.60/133,689.86 = 25,934.09/x
  3. Step 3: Cross multiply
    89,112.60x = 133,689.86 × 25,934.09
  4. Step 4: Simplify right side
    89,112.60x = 3,467,124,591.94
  5. Step 5: Solve for x
    x = 3,467,124,591.94/89,112.60
  6. Step 6: Final answer
    x = 38,907.23

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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.