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Finding the Third Proportional to 75,990 and 165,358

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Solution

The third proportional to 75,990 and 165,358 is: 359,827.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,990 : 165,358 = 165,358 : x
  2. Step 2: Convert to fraction form
    75,990/165,358 = 165,358/x
  3. Step 3: Cross multiply
    75,990x = 165,358 × 165,358
  4. Step 4: Simplify right side
    75,990x = 27,343,268,164
  5. Step 5: Solve for x
    x = 27,343,268,164/75,990
  6. Step 6: Final answer
    x = 359,827.19

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.