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Finding the Third Proportional to 91,005,886 and 128,770,539

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Solution

The third proportional to 91,005,886 and 128,770,539 is: 182,206,365.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,005,886 : 128,770,539 = 128,770,539 : x
  2. Step 2: Convert to fraction form
    91,005,886/128,770,539 = 128,770,539/x
  3. Step 3: Cross multiply
    91,005,886x = 128,770,539 × 128,770,539
  4. Step 4: Simplify right side
    91,005,886x = 16,581,851,714,350,520
  5. Step 5: Solve for x
    x = 16,581,851,714,350,520/91,005,886
  6. Step 6: Final answer
    x = 182,206,365.36

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.