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Finding the Fourth Proportional to 644,181.39, 889,100.82 and 372,260.70

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Solution

The fourth proportional to 644,181.39, 889,100.82 and 372,260.70 is: 513,795.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,181.39 : 889,100.82 = 372,260.70 : x
  2. Step 2: Convert to fraction form
    644,181.39/889,100.82 = 372,260.70/x
  3. Step 3: Cross multiply
    644,181.39x = 889,100.82 × 372,260.70
  4. Step 4: Simplify right side
    644,181.39x = 330,977,293,623.77
  5. Step 5: Solve for x
    x = 330,977,293,623.77/644,181.39
  6. Step 6: Final answer
    x = 513,795.18

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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.