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Finding the Third Proportional to 1,507 and 3,242

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Solution

The third proportional to 1,507 and 3,242 is: 6,974.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,507 : 3,242 = 3,242 : x
  2. Step 2: Convert to fraction form
    1,507/3,242 = 3,242/x
  3. Step 3: Cross multiply
    1,507x = 3,242 × 3,242
  4. Step 4: Simplify right side
    1,507x = 10,510,564
  5. Step 5: Solve for x
    x = 10,510,564/1,507
  6. Step 6: Final answer
    x = 6,974.50

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.