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Finding the Fourth Proportional to 2,674.48, 4,011.90 and 726.52

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Solution

The fourth proportional to 2,674.48, 4,011.90 and 726.52 is: 1,089.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,674.48 : 4,011.90 = 726.52 : x
  2. Step 2: Convert to fraction form
    2,674.48/4,011.90 = 726.52/x
  3. Step 3: Cross multiply
    2,674.48x = 4,011.90 × 726.52
  4. Step 4: Simplify right side
    2,674.48x = 2,914,725.59
  5. Step 5: Solve for x
    x = 2,914,725.59/2,674.48
  6. Step 6: Final answer
    x = 1,089.83

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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.