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Finding the Third Proportional to 433 and 1,172.50

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Solution

The third proportional to 433 and 1,172.50 is: 3,174.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    433 : 1,172.50 = 1,172.50 : x
  2. Step 2: Convert to fraction form
    433/1,172.50 = 1,172.50/x
  3. Step 3: Cross multiply
    433x = 1,172.50 × 1,172.50
  4. Step 4: Simplify right side
    433x = 1,374,756.25
  5. Step 5: Solve for x
    x = 1,374,756.25/433
  6. Step 6: Final answer
    x = 3,174.96

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Why These Related Problems?

These problems maintain the same ratio (2.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.