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Finding the Fourth Proportional to 1,189,977, 1,642,003 and 699,968.71

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Solution

The fourth proportional to 1,189,977, 1,642,003 and 699,968.71 is: 965,859.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,977 : 1,642,003 = 699,968.71 : x
  2. Step 2: Convert to fraction form
    1,189,977/1,642,003 = 699,968.71/x
  3. Step 3: Cross multiply
    1,189,977x = 1,642,003 × 699,968.71
  4. Step 4: Simplify right side
    1,189,977x = 1,149,350,721,726.13
  5. Step 5: Solve for x
    x = 1,149,350,721,726.13/1,189,977
  6. Step 6: Final answer
    x = 965,859.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.