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Finding the Fourth Proportional to 638,363.82, 957,685.77 and 189,119.80

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Solution

The fourth proportional to 638,363.82, 957,685.77 and 189,119.80 is: 283,721.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,363.82 : 957,685.77 = 189,119.80 : x
  2. Step 2: Convert to fraction form
    638,363.82/957,685.77 = 189,119.80/x
  3. Step 3: Cross multiply
    638,363.82x = 957,685.77 × 189,119.80
  4. Step 4: Simplify right side
    638,363.82x = 181,117,338,891.03
  5. Step 5: Solve for x
    x = 181,117,338,891.03/638,363.82
  6. Step 6: Final answer
    x = 283,721.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.