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Finding the Third Proportional to 7,280 and 11,532

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Solution

The third proportional to 7,280 and 11,532 is: 18,267.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280 : 11,532 = 11,532 : x
  2. Step 2: Convert to fraction form
    7,280/11,532 = 11,532/x
  3. Step 3: Cross multiply
    7,280x = 11,532 × 11,532
  4. Step 4: Simplify right side
    7,280x = 132,987,024
  5. Step 5: Solve for x
    x = 132,987,024/7,280
  6. Step 6: Final answer
    x = 18,267.45

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.