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Finding the Fourth Proportional to 1,187,843.58, 1,639,204.02 and 671,589

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Solution

The fourth proportional to 1,187,843.58, 1,639,204.02 and 671,589 is: 926,781.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,843.58 : 1,639,204.02 = 671,589 : x
  2. Step 2: Convert to fraction form
    1,187,843.58/1,639,204.02 = 671,589/x
  3. Step 3: Cross multiply
    1,187,843.58x = 1,639,204.02 × 671,589
  4. Step 4: Simplify right side
    1,187,843.58x = 1,100,871,388,587.78
  5. Step 5: Solve for x
    x = 1,100,871,388,587.78/1,187,843.58
  6. Step 6: Final answer
    x = 926,781.44

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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.