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Finding the Third Proportional to 72,216 and 106,188

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Solution

The third proportional to 72,216 and 106,188 is: 156,141.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,216 : 106,188 = 106,188 : x
  2. Step 2: Convert to fraction form
    72,216/106,188 = 106,188/x
  3. Step 3: Cross multiply
    72,216x = 106,188 × 106,188
  4. Step 4: Simplify right side
    72,216x = 11,275,891,344
  5. Step 5: Solve for x
    x = 11,275,891,344/72,216
  6. Step 6: Final answer
    x = 156,141.18

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.