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Finding the Third Proportional to 75,120 and 116,991

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Solution

The third proportional to 75,120 and 116,991 is: 182,200.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,120 : 116,991 = 116,991 : x
  2. Step 2: Convert to fraction form
    75,120/116,991 = 116,991/x
  3. Step 3: Cross multiply
    75,120x = 116,991 × 116,991
  4. Step 4: Simplify right side
    75,120x = 13,686,894,081
  5. Step 5: Solve for x
    x = 13,686,894,081/75,120
  6. Step 6: Final answer
    x = 182,200.40

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.