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Finding the Third Proportional to 4,664.50 and 7,240

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Solution

The third proportional to 4,664.50 and 7,240 is: 11,237.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,664.50 : 7,240 = 7,240 : x
  2. Step 2: Convert to fraction form
    4,664.50/7,240 = 7,240/x
  3. Step 3: Cross multiply
    4,664.50x = 7,240 × 7,240
  4. Step 4: Simplify right side
    4,664.50x = 52,417,600
  5. Step 5: Solve for x
    x = 52,417,600/4,664.50
  6. Step 6: Final answer
    x = 11,237.56

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.