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Finding the Third Proportional to 4,768 and 7,315

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Solution

The third proportional to 4,768 and 7,315 is: 11,222.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,768 : 7,315 = 7,315 : x
  2. Step 2: Convert to fraction form
    4,768/7,315 = 7,315/x
  3. Step 3: Cross multiply
    4,768x = 7,315 × 7,315
  4. Step 4: Simplify right side
    4,768x = 53,509,225
  5. Step 5: Solve for x
    x = 53,509,225/4,768
  6. Step 6: Final answer
    x = 11,222.57

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.