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Finding the Third Proportional to 462 and 989.50

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Solution

The third proportional to 462 and 989.50 is: 2,119.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    462 : 989.50 = 989.50 : x
  2. Step 2: Convert to fraction form
    462/989.50 = 989.50/x
  3. Step 3: Cross multiply
    462x = 989.50 × 989.50
  4. Step 4: Simplify right side
    462x = 979,110.25
  5. Step 5: Solve for x
    x = 979,110.25/462
  6. Step 6: Final answer
    x = 2,119.29

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.