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Finding the Third Proportional to 74,479.08 and 163,989.56

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Solution

The third proportional to 74,479.08 and 163,989.56 is: 361,075.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,479.08 : 163,989.56 = 163,989.56 : x
  2. Step 2: Convert to fraction form
    74,479.08/163,989.56 = 163,989.56/x
  3. Step 3: Cross multiply
    74,479.08x = 163,989.56 × 163,989.56
  4. Step 4: Simplify right side
    74,479.08x = 26,892,576,608.94
  5. Step 5: Solve for x
    x = 26,892,576,608.94/74,479.08
  6. Step 6: Final answer
    x = 361,075.58

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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.