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Finding the Third Proportional to 202,221,990 and 435,682,849.50

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Solution

The third proportional to 202,221,990 and 435,682,849.50 is: 938,669,159.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,221,990 : 435,682,849.50 = 435,682,849.50 : x
  2. Step 2: Convert to fraction form
    202,221,990/435,682,849.50 = 435,682,849.50/x
  3. Step 3: Cross multiply
    202,221,990x = 435,682,849.50 × 435,682,849.50
  4. Step 4: Simplify right side
    202,221,990x = 189,819,545,348,439,648
  5. Step 5: Solve for x
    x = 189,819,545,348,439,648/202,221,990
  6. Step 6: Final answer
    x = 938,669,159.32

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.