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Finding the Third Proportional to 71,779.50 and 157,167

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Solution

The third proportional to 71,779.50 and 157,167 is: 344,129.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,779.50 : 157,167 = 157,167 : x
  2. Step 2: Convert to fraction form
    71,779.50/157,167 = 157,167/x
  3. Step 3: Cross multiply
    71,779.50x = 157,167 × 157,167
  4. Step 4: Simplify right side
    71,779.50x = 24,701,465,889
  5. Step 5: Solve for x
    x = 24,701,465,889/71,779.50
  6. Step 6: Final answer
    x = 344,129.81

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.