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Finding the Third Proportional to 654 and 926.25

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Solution

The third proportional to 654 and 926.25 is: 1,311.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    654 : 926.25 = 926.25 : x
  2. Step 2: Convert to fraction form
    654/926.25 = 926.25/x
  3. Step 3: Cross multiply
    654x = 926.25 × 926.25
  4. Step 4: Simplify right side
    654x = 857,939.06
  5. Step 5: Solve for x
    x = 857,939.06/654
  6. Step 6: Final answer
    x = 1,311.83

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.