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Finding the Third Proportional to 74,168 and 117,921

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Solution

The third proportional to 74,168 and 117,921 is: 187,484.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,168 : 117,921 = 117,921 : x
  2. Step 2: Convert to fraction form
    74,168/117,921 = 117,921/x
  3. Step 3: Cross multiply
    74,168x = 117,921 × 117,921
  4. Step 4: Simplify right side
    74,168x = 13,905,362,241
  5. Step 5: Solve for x
    x = 13,905,362,241/74,168
  6. Step 6: Final answer
    x = 187,484.66

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.