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Finding the Fourth Proportional to 3,678.55, 5,080.01 and 2,668.48

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Solution

The fourth proportional to 3,678.55, 5,080.01 and 2,668.48 is: 3,685.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.55 : 5,080.01 = 2,668.48 : x
  2. Step 2: Convert to fraction form
    3,678.55/5,080.01 = 2,668.48/x
  3. Step 3: Cross multiply
    3,678.55x = 5,080.01 × 2,668.48
  4. Step 4: Simplify right side
    3,678.55x = 13,555,866.34
  5. Step 5: Solve for x
    x = 13,555,866.34/3,678.55
  6. Step 6: Final answer
    x = 3,685.12

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.