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Finding the Third Proportional to 4,869 and 5,407.50

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Solution

The third proportional to 4,869 and 5,407.50 is: 6,005.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,869 : 5,407.50 = 5,407.50 : x
  2. Step 2: Convert to fraction form
    4,869/5,407.50 = 5,407.50/x
  3. Step 3: Cross multiply
    4,869x = 5,407.50 × 5,407.50
  4. Step 4: Simplify right side
    4,869x = 29,241,056.25
  5. Step 5: Solve for x
    x = 29,241,056.25/4,869
  6. Step 6: Final answer
    x = 6,005.56

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.