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Finding the Third Proportional to 75,424 and 163,970

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Solution

The third proportional to 75,424 and 163,970 is: 356,466.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,424 : 163,970 = 163,970 : x
  2. Step 2: Convert to fraction form
    75,424/163,970 = 163,970/x
  3. Step 3: Cross multiply
    75,424x = 163,970 × 163,970
  4. Step 4: Simplify right side
    75,424x = 26,886,160,900
  5. Step 5: Solve for x
    x = 26,886,160,900/75,424
  6. Step 6: Final answer
    x = 356,466.92

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.