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Finding the Third Proportional to 4,838.50 and 7,447

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Solution

The third proportional to 4,838.50 and 7,447 is: 11,461.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,838.50 : 7,447 = 7,447 : x
  2. Step 2: Convert to fraction form
    4,838.50/7,447 = 7,447/x
  3. Step 3: Cross multiply
    4,838.50x = 7,447 × 7,447
  4. Step 4: Simplify right side
    4,838.50x = 55,457,809
  5. Step 5: Solve for x
    x = 55,457,809/4,838.50
  6. Step 6: Final answer
    x = 11,461.78

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.