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Finding the Third Proportional to 18,611,918 and 40,897,790.50

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Solution

The third proportional to 18,611,918 and 40,897,790.50 is: 89,868,721.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611,918 : 40,897,790.50 = 40,897,790.50 : x
  2. Step 2: Convert to fraction form
    18,611,918/40,897,790.50 = 40,897,790.50/x
  3. Step 3: Cross multiply
    18,611,918x = 40,897,790.50 × 40,897,790.50
  4. Step 4: Simplify right side
    18,611,918x = 1,672,629,267,781,890.25
  5. Step 5: Solve for x
    x = 1,672,629,267,781,890.25/18,611,918
  6. Step 6: Final answer
    x = 89,868,721.09

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.