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Finding the Third Proportional to 4,572 and 7,124

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Solution

The third proportional to 4,572 and 7,124 is: 11,100.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,572 : 7,124 = 7,124 : x
  2. Step 2: Convert to fraction form
    4,572/7,124 = 7,124/x
  3. Step 3: Cross multiply
    4,572x = 7,124 × 7,124
  4. Step 4: Simplify right side
    4,572x = 50,751,376
  5. Step 5: Solve for x
    x = 50,751,376/4,572
  6. Step 6: Final answer
    x = 11,100.48

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.