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Finding the Third Proportional to 3,503 and 7,240

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Solution

The third proportional to 3,503 and 7,240 is: 14,963.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,503 : 7,240 = 7,240 : x
  2. Step 2: Convert to fraction form
    3,503/7,240 = 7,240/x
  3. Step 3: Cross multiply
    3,503x = 7,240 × 7,240
  4. Step 4: Simplify right side
    3,503x = 52,417,600
  5. Step 5: Solve for x
    x = 52,417,600/3,503
  6. Step 6: Final answer
    x = 14,963.63

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.