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Finding the Third Proportional to 909.50 and 1,925

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Solution

The third proportional to 909.50 and 1,925 is: 4,074.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    909.50 : 1,925 = 1,925 : x
  2. Step 2: Convert to fraction form
    909.50/1,925 = 1,925/x
  3. Step 3: Cross multiply
    909.50x = 1,925 × 1,925
  4. Step 4: Simplify right side
    909.50x = 3,705,625
  5. Step 5: Solve for x
    x = 3,705,625/909.50
  6. Step 6: Final answer
    x = 4,074.35

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.