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Finding the Fourth Proportional to 486,091.25, 729,171.91 and 186,571.83

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Solution

The fourth proportional to 486,091.25, 729,171.91 and 186,571.83 is: 279,871.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,091.25 : 729,171.91 = 186,571.83 : x
  2. Step 2: Convert to fraction form
    486,091.25/729,171.91 = 186,571.83/x
  3. Step 3: Cross multiply
    486,091.25x = 729,171.91 × 186,571.83
  4. Step 4: Simplify right side
    486,091.25x = 136,042,937,633.30
  5. Step 5: Solve for x
    x = 136,042,937,633.30/486,091.25
  6. Step 6: Final answer
    x = 279,871.19

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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.