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Finding the Fourth Proportional to 644,783.54, 889,794.87 and 358,297.61

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Solution

The fourth proportional to 644,783.54, 889,794.87 and 358,297.61 is: 494,447.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,783.54 : 889,794.87 = 358,297.61 : x
  2. Step 2: Convert to fraction form
    644,783.54/889,794.87 = 358,297.61/x
  3. Step 3: Cross multiply
    644,783.54x = 889,794.87 × 358,297.61
  4. Step 4: Simplify right side
    644,783.54x = 318,811,375,311.26
  5. Step 5: Solve for x
    x = 318,811,375,311.26/644,783.54
  6. Step 6: Final answer
    x = 494,447.14

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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.