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Finding the Third Proportional to 928.75 and 1,529.75

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Solution

The third proportional to 928.75 and 1,529.75 is: 2,519.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    928.75 : 1,529.75 = 1,529.75 : x
  2. Step 2: Convert to fraction form
    928.75/1,529.75 = 1,529.75/x
  3. Step 3: Cross multiply
    928.75x = 1,529.75 × 1,529.75
  4. Step 4: Simplify right side
    928.75x = 2,340,135.06
  5. Step 5: Solve for x
    x = 2,340,135.06/928.75
  6. Step 6: Final answer
    x = 2,519.66

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Why These Related Problems?

These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.