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Finding the Third Proportional to 993.75 and 2,158.50

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Solution

The third proportional to 993.75 and 2,158.50 is: 4,688.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    993.75 : 2,158.50 = 2,158.50 : x
  2. Step 2: Convert to fraction form
    993.75/2,158.50 = 2,158.50/x
  3. Step 3: Cross multiply
    993.75x = 2,158.50 × 2,158.50
  4. Step 4: Simplify right side
    993.75x = 4,659,122.25
  5. Step 5: Solve for x
    x = 4,659,122.25/993.75
  6. Step 6: Final answer
    x = 4,688.42

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.