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Finding the Third Proportional to 928.50 and 1,395

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Solution

The third proportional to 928.50 and 1,395 is: 2,095.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    928.50 : 1,395 = 1,395 : x
  2. Step 2: Convert to fraction form
    928.50/1,395 = 1,395/x
  3. Step 3: Cross multiply
    928.50x = 1,395 × 1,395
  4. Step 4: Simplify right side
    928.50x = 1,946,025
  5. Step 5: Solve for x
    x = 1,946,025/928.50
  6. Step 6: Final answer
    x = 2,095.88

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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.