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Finding the Fourth Proportional to 2,668.88, 4,002.40 and 794.24

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Solution

The fourth proportional to 2,668.88, 4,002.40 and 794.24 is: 1,191.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.88 : 4,002.40 = 794.24 : x
  2. Step 2: Convert to fraction form
    2,668.88/4,002.40 = 794.24/x
  3. Step 3: Cross multiply
    2,668.88x = 4,002.40 × 794.24
  4. Step 4: Simplify right side
    2,668.88x = 3,178,866.18
  5. Step 5: Solve for x
    x = 3,178,866.18/2,668.88
  6. Step 6: Final answer
    x = 1,191.09

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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.