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Finding the Fourth Proportional to 644,179.14, 889,049.22 and 389,532.14

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Solution

The fourth proportional to 644,179.14, 889,049.22 and 389,532.14 is: 537,603.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,179.14 : 889,049.22 = 389,532.14 : x
  2. Step 2: Convert to fraction form
    644,179.14/889,049.22 = 389,532.14/x
  3. Step 3: Cross multiply
    644,179.14x = 889,049.22 × 389,532.14
  4. Step 4: Simplify right side
    644,179.14x = 346,313,245,231.93
  5. Step 5: Solve for x
    x = 346,313,245,231.93/644,179.14
  6. Step 6: Final answer
    x = 537,603.94

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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.