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Finding the Fourth Proportional to 590,986.90, 886,589.70 and 191,640.70

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Solution

The fourth proportional to 590,986.90, 886,589.70 and 191,640.70 is: 287,496.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,986.90 : 886,589.70 = 191,640.70 : x
  2. Step 2: Convert to fraction form
    590,986.90/886,589.70 = 191,640.70/x
  3. Step 3: Cross multiply
    590,986.90x = 886,589.70 × 191,640.70
  4. Step 4: Simplify right side
    590,986.90x = 169,906,670,720.79
  5. Step 5: Solve for x
    x = 169,906,670,720.79/590,986.90
  6. Step 6: Final answer
    x = 287,496.51

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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.