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Finding the Fourth Proportional to 439,812.91, 659,720.99 and 187,057.27

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Solution

The fourth proportional to 439,812.91, 659,720.99 and 187,057.27 is: 280,586.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,812.91 : 659,720.99 = 187,057.27 : x
  2. Step 2: Convert to fraction form
    439,812.91/659,720.99 = 187,057.27/x
  3. Step 3: Cross multiply
    439,812.91x = 659,720.99 × 187,057.27
  4. Step 4: Simplify right side
    439,812.91x = 123,405,607,351.10
  5. Step 5: Solve for x
    x = 123,405,607,351.10/439,812.91
  6. Step 6: Final answer
    x = 280,586.60

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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.