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Finding the Fourth Proportional to 414,589.50, 621,859.55 and 243,907.11

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Solution

The fourth proportional to 414,589.50, 621,859.55 and 243,907.11 is: 365,846.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,589.50 : 621,859.55 = 243,907.11 : x
  2. Step 2: Convert to fraction form
    414,589.50/621,859.55 = 243,907.11/x
  3. Step 3: Cross multiply
    414,589.50x = 621,859.55 × 243,907.11
  4. Step 4: Simplify right side
    414,589.50x = 151,675,964,446.87
  5. Step 5: Solve for x
    x = 151,675,964,446.87/414,589.50
  6. Step 6: Final answer
    x = 365,846.13

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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.