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Finding the Fourth Proportional to 3,316.68, 4,974.84 and 1,008

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Solution

The fourth proportional to 3,316.68, 4,974.84 and 1,008 is: 1,511.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,316.68 : 4,974.84 = 1,008 : x
  2. Step 2: Convert to fraction form
    3,316.68/4,974.84 = 1,008/x
  3. Step 3: Cross multiply
    3,316.68x = 4,974.84 × 1,008
  4. Step 4: Simplify right side
    3,316.68x = 5,014,638.72
  5. Step 5: Solve for x
    x = 5,014,638.72/3,316.68
  6. Step 6: Final answer
    x = 1,511.95

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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.