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Finding the Third Proportional to 988 and 2,104

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Solution

The third proportional to 988 and 2,104 is: 4,480.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    988 : 2,104 = 2,104 : x
  2. Step 2: Convert to fraction form
    988/2,104 = 2,104/x
  3. Step 3: Cross multiply
    988x = 2,104 × 2,104
  4. Step 4: Simplify right side
    988x = 4,426,816
  5. Step 5: Solve for x
    x = 4,426,816/988
  6. Step 6: Final answer
    x = 4,480.58

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.