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Finding the Third Proportional to 54,520 and 79,392

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Solution

The third proportional to 54,520 and 79,392 is: 115,610.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,520 : 79,392 = 79,392 : x
  2. Step 2: Convert to fraction form
    54,520/79,392 = 79,392/x
  3. Step 3: Cross multiply
    54,520x = 79,392 × 79,392
  4. Step 4: Simplify right side
    54,520x = 6,303,089,664
  5. Step 5: Solve for x
    x = 6,303,089,664/54,520
  6. Step 6: Final answer
    x = 115,610.60

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.