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Finding the Fourth Proportional to 609,457.28, 840,771.89 and 394,666.54

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Solution

The fourth proportional to 609,457.28, 840,771.89 and 394,666.54 is: 544,459.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,457.28 : 840,771.89 = 394,666.54 : x
  2. Step 2: Convert to fraction form
    609,457.28/840,771.89 = 394,666.54/x
  3. Step 3: Cross multiply
    609,457.28x = 840,771.89 × 394,666.54
  4. Step 4: Simplify right side
    609,457.28x = 331,824,526,578.37
  5. Step 5: Solve for x
    x = 331,824,526,578.37/609,457.28
  6. Step 6: Final answer
    x = 544,459.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.