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Finding the Third Proportional to 5,143.50 and 7,476

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Solution

The third proportional to 5,143.50 and 7,476 is: 10,866.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.50 : 7,476 = 7,476 : x
  2. Step 2: Convert to fraction form
    5,143.50/7,476 = 7,476/x
  3. Step 3: Cross multiply
    5,143.50x = 7,476 × 7,476
  4. Step 4: Simplify right side
    5,143.50x = 55,890,576
  5. Step 5: Solve for x
    x = 55,890,576/5,143.50
  6. Step 6: Final answer
    x = 10,866.25

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.