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Finding the Fourth Proportional to 459,143.45, 685,243.13 and 447,186.02

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Solution

The fourth proportional to 459,143.45, 685,243.13 and 447,186.02 is: 667,397.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,143.45 : 685,243.13 = 447,186.02 : x
  2. Step 2: Convert to fraction form
    459,143.45/685,243.13 = 447,186.02/x
  3. Step 3: Cross multiply
    459,143.45x = 685,243.13 × 447,186.02
  4. Step 4: Simplify right side
    459,143.45x = 306,431,150,868.12
  5. Step 5: Solve for x
    x = 306,431,150,868.12/459,143.45
  6. Step 6: Final answer
    x = 667,397.42

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.