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Finding the Third Proportional to 18,212,312.11 and 28,021,889.67

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Solution

The third proportional to 18,212,312.11 and 28,021,889.67 is: 43,115,135.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,212,312.11 : 28,021,889.67 = 28,021,889.67 : x
  2. Step 2: Convert to fraction form
    18,212,312.11/28,021,889.67 = 28,021,889.67/x
  3. Step 3: Cross multiply
    18,212,312.11x = 28,021,889.67 × 28,021,889.67
  4. Step 4: Simplify right side
    18,212,312.11x = 785,226,300,782,734.75
  5. Step 5: Solve for x
    x = 785,226,300,782,734.75/18,212,312.11
  6. Step 6: Final answer
    x = 43,115,135.30

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.