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Finding the Fourth Proportional to 685,502.88, 1,028,215.44 and 186,828

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Solution

The fourth proportional to 685,502.88, 1,028,215.44 and 186,828 is: 280,231.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,502.88 : 1,028,215.44 = 186,828 : x
  2. Step 2: Convert to fraction form
    685,502.88/1,028,215.44 = 186,828/x
  3. Step 3: Cross multiply
    685,502.88x = 1,028,215.44 × 186,828
  4. Step 4: Simplify right side
    685,502.88x = 192,099,434,224.32
  5. Step 5: Solve for x
    x = 192,099,434,224.32/685,502.88
  6. Step 6: Final answer
    x = 280,231.40

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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.