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Finding the Fourth Proportional to 2,674.65, 4,011.99 and 726.86

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Solution

The fourth proportional to 2,674.65, 4,011.99 and 726.86 is: 1,090.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,674.65 : 4,011.99 = 726.86 : x
  2. Step 2: Convert to fraction form
    2,674.65/4,011.99 = 726.86/x
  3. Step 3: Cross multiply
    2,674.65x = 4,011.99 × 726.86
  4. Step 4: Simplify right side
    2,674.65x = 2,916,134.99
  5. Step 5: Solve for x
    x = 2,916,134.99/2,674.65
  6. Step 6: Final answer
    x = 1,090.29

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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.