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Finding the Third Proportional to 188,810,990 and 291,601,611

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Solution

The third proportional to 188,810,990 and 291,601,611 is: 450,352,490.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,810,990 : 291,601,611 = 291,601,611 : x
  2. Step 2: Convert to fraction form
    188,810,990/291,601,611 = 291,601,611/x
  3. Step 3: Cross multiply
    188,810,990x = 291,601,611 × 291,601,611
  4. Step 4: Simplify right side
    188,810,990x = 85,031,499,537,795,328
  5. Step 5: Solve for x
    x = 85,031,499,537,795,328/188,810,990
  6. Step 6: Final answer
    x = 450,352,490.28

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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.