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Finding the Fourth Proportional to 3,326.55, 4,983.28 and 1,861.23

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Solution

The fourth proportional to 3,326.55, 4,983.28 and 1,861.23 is: 2,788.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,326.55 : 4,983.28 = 1,861.23 : x
  2. Step 2: Convert to fraction form
    3,326.55/4,983.28 = 1,861.23/x
  3. Step 3: Cross multiply
    3,326.55x = 4,983.28 × 1,861.23
  4. Step 4: Simplify right side
    3,326.55x = 9,275,030.23
  5. Step 5: Solve for x
    x = 9,275,030.23/3,326.55
  6. Step 6: Final answer
    x = 2,788.18

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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.