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Finding the Third Proportional to 4,300 and 9,240

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Solution

The third proportional to 4,300 and 9,240 is: 19,855.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,300 : 9,240 = 9,240 : x
  2. Step 2: Convert to fraction form
    4,300/9,240 = 9,240/x
  3. Step 3: Cross multiply
    4,300x = 9,240 × 9,240
  4. Step 4: Simplify right side
    4,300x = 85,377,600
  5. Step 5: Solve for x
    x = 85,377,600/4,300
  6. Step 6: Final answer
    x = 19,855.26

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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.