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Finding the Fourth Proportional to 4,486.97, 6,730.46 and 1,408.97

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Solution

The fourth proportional to 4,486.97, 6,730.46 and 1,408.97 is: 2,113.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,486.97 : 6,730.46 = 1,408.97 : x
  2. Step 2: Convert to fraction form
    4,486.97/6,730.46 = 1,408.97/x
  3. Step 3: Cross multiply
    4,486.97x = 6,730.46 × 1,408.97
  4. Step 4: Simplify right side
    4,486.97x = 9,483,036.57
  5. Step 5: Solve for x
    x = 9,483,036.57/4,486.97
  6. Step 6: Final answer
    x = 2,113.46

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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.