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Finding the Third Proportional to 368.75 and 447.50

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Solution

The third proportional to 368.75 and 447.50 is: 543.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.75 : 447.50 = 447.50 : x
  2. Step 2: Convert to fraction form
    368.75/447.50 = 447.50/x
  3. Step 3: Cross multiply
    368.75x = 447.50 × 447.50
  4. Step 4: Simplify right side
    368.75x = 200,256.25
  5. Step 5: Solve for x
    x = 200,256.25/368.75
  6. Step 6: Final answer
    x = 543.07

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Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.