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Finding the Third Proportional to 56,621 and 124,785

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Solution

The third proportional to 56,621 and 124,785 is: 275,009.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,621 : 124,785 = 124,785 : x
  2. Step 2: Convert to fraction form
    56,621/124,785 = 124,785/x
  3. Step 3: Cross multiply
    56,621x = 124,785 × 124,785
  4. Step 4: Simplify right side
    56,621x = 15,571,296,225
  5. Step 5: Solve for x
    x = 15,571,296,225/56,621
  6. Step 6: Final answer
    x = 275,009.21

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.