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Finding the Third Proportional to 4,516 and 7,142

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Solution

The third proportional to 4,516 and 7,142 is: 11,294.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,516 : 7,142 = 7,142 : x
  2. Step 2: Convert to fraction form
    4,516/7,142 = 7,142/x
  3. Step 3: Cross multiply
    4,516x = 7,142 × 7,142
  4. Step 4: Simplify right side
    4,516x = 51,008,164
  5. Step 5: Solve for x
    x = 51,008,164/4,516
  6. Step 6: Final answer
    x = 11,294.99

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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.