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Finding the Fourth Proportional to 419,863.02, 629,729.61 and 153,561.26

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Solution

The fourth proportional to 419,863.02, 629,729.61 and 153,561.26 is: 230,318.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,863.02 : 629,729.61 = 153,561.26 : x
  2. Step 2: Convert to fraction form
    419,863.02/629,729.61 = 153,561.26/x
  3. Step 3: Cross multiply
    419,863.02x = 629,729.61 × 153,561.26
  4. Step 4: Simplify right side
    419,863.02x = 96,702,072,370.91
  5. Step 5: Solve for x
    x = 96,702,072,370.91/419,863.02
  6. Step 6: Final answer
    x = 230,318.15

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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.