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Finding the Third Proportional to 86,167.50 and 129,342

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Solution

The third proportional to 86,167.50 and 129,342 is: 194,149.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,167.50 : 129,342 = 129,342 : x
  2. Step 2: Convert to fraction form
    86,167.50/129,342 = 129,342/x
  3. Step 3: Cross multiply
    86,167.50x = 129,342 × 129,342
  4. Step 4: Simplify right side
    86,167.50x = 16,729,352,964
  5. Step 5: Solve for x
    x = 16,729,352,964/86,167.50
  6. Step 6: Final answer
    x = 194,149.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.