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Finding the Fourth Proportional to 70,491.67, 105,550.44 and 55,141.26

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Solution

The fourth proportional to 70,491.67, 105,550.44 and 55,141.26 is: 82,565.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,491.67 : 105,550.44 = 55,141.26 : x
  2. Step 2: Convert to fraction form
    70,491.67/105,550.44 = 55,141.26/x
  3. Step 3: Cross multiply
    70,491.67x = 105,550.44 × 55,141.26
  4. Step 4: Simplify right side
    70,491.67x = 5,820,183,962.73
  5. Step 5: Solve for x
    x = 5,820,183,962.73/70,491.67
  6. Step 6: Final answer
    x = 82,565.56

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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.