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Finding the Third Proportional to 120,790 and 177,024

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Solution

The third proportional to 120,790 and 177,024 is: 259,437.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,790 : 177,024 = 177,024 : x
  2. Step 2: Convert to fraction form
    120,790/177,024 = 177,024/x
  3. Step 3: Cross multiply
    120,790x = 177,024 × 177,024
  4. Step 4: Simplify right side
    120,790x = 31,337,496,576
  5. Step 5: Solve for x
    x = 31,337,496,576/120,790
  6. Step 6: Final answer
    x = 259,437.84

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.