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Finding the Third Proportional to 75,120 and 109,152

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Solution

The third proportional to 75,120 and 109,152 is: 158,601.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,120 : 109,152 = 109,152 : x
  2. Step 2: Convert to fraction form
    75,120/109,152 = 109,152/x
  3. Step 3: Cross multiply
    75,120x = 109,152 × 109,152
  4. Step 4: Simplify right side
    75,120x = 11,914,159,104
  5. Step 5: Solve for x
    x = 11,914,159,104/75,120
  6. Step 6: Final answer
    x = 158,601.69

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.