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Finding the Fourth Proportional to 1,817.63, 2,726.87 and 519.06

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Solution

The fourth proportional to 1,817.63, 2,726.87 and 519.06 is: 778.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,817.63 : 2,726.87 = 519.06 : x
  2. Step 2: Convert to fraction form
    1,817.63/2,726.87 = 519.06/x
  3. Step 3: Cross multiply
    1,817.63x = 2,726.87 × 519.06
  4. Step 4: Simplify right side
    1,817.63x = 1,415,406.55
  5. Step 5: Solve for x
    x = 1,415,406.55/1,817.63
  6. Step 6: Final answer
    x = 778.71

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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.