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Finding the Third Proportional to 75,715.50 and 163,971

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Solution

The third proportional to 75,715.50 and 163,971 is: 355,098.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,715.50 : 163,971 = 163,971 : x
  2. Step 2: Convert to fraction form
    75,715.50/163,971 = 163,971/x
  3. Step 3: Cross multiply
    75,715.50x = 163,971 × 163,971
  4. Step 4: Simplify right side
    75,715.50x = 26,886,488,841
  5. Step 5: Solve for x
    x = 26,886,488,841/75,715.50
  6. Step 6: Final answer
    x = 355,098.87

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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.