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Finding the Third Proportional to 4,928 and 7,485

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Solution

The third proportional to 4,928 and 7,485 is: 11,368.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,928 : 7,485 = 7,485 : x
  2. Step 2: Convert to fraction form
    4,928/7,485 = 7,485/x
  3. Step 3: Cross multiply
    4,928x = 7,485 × 7,485
  4. Step 4: Simplify right side
    4,928x = 56,025,225
  5. Step 5: Solve for x
    x = 56,025,225/4,928
  6. Step 6: Final answer
    x = 11,368.76

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.