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Finding the Third Proportional to 48,138 and 74,394

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Solution

The third proportional to 48,138 and 74,394 is: 114,970.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,138 : 74,394 = 74,394 : x
  2. Step 2: Convert to fraction form
    48,138/74,394 = 74,394/x
  3. Step 3: Cross multiply
    48,138x = 74,394 × 74,394
  4. Step 4: Simplify right side
    48,138x = 5,534,467,236
  5. Step 5: Solve for x
    x = 5,534,467,236/48,138
  6. Step 6: Final answer
    x = 114,970.86

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.