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Finding the Fourth Proportional to 89,065.70, 133,620.15 and 62,821.70

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Solution

The fourth proportional to 89,065.70, 133,620.15 and 62,821.70 is: 94,247.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,065.70 : 133,620.15 = 62,821.70 : x
  2. Step 2: Convert to fraction form
    89,065.70/133,620.15 = 62,821.70/x
  3. Step 3: Cross multiply
    89,065.70x = 133,620.15 × 62,821.70
  4. Step 4: Simplify right side
    89,065.70x = 8,394,244,977.26
  5. Step 5: Solve for x
    x = 8,394,244,977.26/89,065.70
  6. Step 6: Final answer
    x = 94,247.79

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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.