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Finding the Fourth Proportional to 419,389.43, 628,462.04 and 308,037.11

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Solution

The fourth proportional to 419,389.43, 628,462.04 and 308,037.11 is: 461,598.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,389.43 : 628,462.04 = 308,037.11 : x
  2. Step 2: Convert to fraction form
    419,389.43/628,462.04 = 308,037.11/x
  3. Step 3: Cross multiply
    419,389.43x = 628,462.04 × 308,037.11
  4. Step 4: Simplify right side
    419,389.43x = 193,589,625,863.81
  5. Step 5: Solve for x
    x = 193,589,625,863.81/419,389.43
  6. Step 6: Final answer
    x = 461,598.73

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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.