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Finding the Fourth Proportional to 6,473.20, 9,690.84 and 4,919.41

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Solution

The fourth proportional to 6,473.20, 9,690.84 and 4,919.41 is: 7,364.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,473.20 : 9,690.84 = 4,919.41 : x
  2. Step 2: Convert to fraction form
    6,473.20/9,690.84 = 4,919.41/x
  3. Step 3: Cross multiply
    6,473.20x = 9,690.84 × 4,919.41
  4. Step 4: Simplify right side
    6,473.20x = 47,673,200.06
  5. Step 5: Solve for x
    x = 47,673,200.06/6,473.20
  6. Step 6: Final answer
    x = 7,364.70

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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.