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Finding the Fourth Proportional to 2,988.41, 4,482.63 and 908.44

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Solution

The fourth proportional to 2,988.41, 4,482.63 and 908.44 is: 1,362.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.41 : 4,482.63 = 908.44 : x
  2. Step 2: Convert to fraction form
    2,988.41/4,482.63 = 908.44/x
  3. Step 3: Cross multiply
    2,988.41x = 4,482.63 × 908.44
  4. Step 4: Simplify right side
    2,988.41x = 4,072,177.98
  5. Step 5: Solve for x
    x = 4,072,177.98/2,988.41
  6. Step 6: Final answer
    x = 1,362.66

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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.