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Finding the Third Proportional to 4,938.50 and 7,212.75

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Solution

The third proportional to 4,938.50 and 7,212.75 is: 10,534.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,938.50 : 7,212.75 = 7,212.75 : x
  2. Step 2: Convert to fraction form
    4,938.50/7,212.75 = 7,212.75/x
  3. Step 3: Cross multiply
    4,938.50x = 7,212.75 × 7,212.75
  4. Step 4: Simplify right side
    4,938.50x = 52,023,762.56
  5. Step 5: Solve for x
    x = 52,023,762.56/4,938.50
  6. Step 6: Final answer
    x = 10,534.32

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.