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Finding the Fourth Proportional to 4,908.76, 7,363.60 and 1,621.06

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Solution

The fourth proportional to 4,908.76, 7,363.60 and 1,621.06 is: 2,431.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,908.76 : 7,363.60 = 1,621.06 : x
  2. Step 2: Convert to fraction form
    4,908.76/7,363.60 = 1,621.06/x
  3. Step 3: Cross multiply
    4,908.76x = 7,363.60 × 1,621.06
  4. Step 4: Simplify right side
    4,908.76x = 11,936,837.42
  5. Step 5: Solve for x
    x = 11,936,837.42/4,908.76
  6. Step 6: Final answer
    x = 2,431.74

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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.