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Finding the Third Proportional to 917.63 and 2,205.75

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Solution

The third proportional to 917.63 and 2,205.75 is: 5,302.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    917.63 : 2,205.75 = 2,205.75 : x
  2. Step 2: Convert to fraction form
    917.63/2,205.75 = 2,205.75/x
  3. Step 3: Cross multiply
    917.63x = 2,205.75 × 2,205.75
  4. Step 4: Simplify right side
    917.63x = 4,865,333.06
  5. Step 5: Solve for x
    x = 4,865,333.06/917.63
  6. Step 6: Final answer
    x = 5,302.09

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Why These Related Problems?

These problems maintain the same ratio (2.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.