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Finding the Third Proportional to 47,640 and 75,504

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Solution

The third proportional to 47,640 and 75,504 is: 119,665.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,640 : 75,504 = 75,504 : x
  2. Step 2: Convert to fraction form
    47,640/75,504 = 75,504/x
  3. Step 3: Cross multiply
    47,640x = 75,504 × 75,504
  4. Step 4: Simplify right side
    47,640x = 5,700,854,016
  5. Step 5: Solve for x
    x = 5,700,854,016/47,640
  6. Step 6: Final answer
    x = 119,665.28

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.