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Finding the Third Proportional to 38,621,966 and 54,128,587

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Solution

The third proportional to 38,621,966 and 54,128,587 is: 75,861,076.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,621,966 : 54,128,587 = 54,128,587 : x
  2. Step 2: Convert to fraction form
    38,621,966/54,128,587 = 54,128,587/x
  3. Step 3: Cross multiply
    38,621,966x = 54,128,587 × 54,128,587
  4. Step 4: Simplify right side
    38,621,966x = 2,929,903,930,616,569
  5. Step 5: Solve for x
    x = 2,929,903,930,616,569/38,621,966
  6. Step 6: Final answer
    x = 75,861,076.84

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.