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Finding the Fourth Proportional to 644,520.33, 889,463.30 and 440,998.11

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Solution

The fourth proportional to 644,520.33, 889,463.30 and 440,998.11 is: 608,594.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,520.33 : 889,463.30 = 440,998.11 : x
  2. Step 2: Convert to fraction form
    644,520.33/889,463.30 = 440,998.11/x
  3. Step 3: Cross multiply
    644,520.33x = 889,463.30 × 440,998.11
  4. Step 4: Simplify right side
    644,520.33x = 392,251,632,009.37
  5. Step 5: Solve for x
    x = 392,251,632,009.37/644,520.33
  6. Step 6: Final answer
    x = 608,594.66

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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.