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Finding the Fourth Proportional to 592,990.32, 889,694.28 and 394,100.40

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Solution

The fourth proportional to 592,990.32, 889,694.28 and 394,100.40 is: 591,289.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    592,990.32 : 889,694.28 = 394,100.40 : x
  2. Step 2: Convert to fraction form
    592,990.32/889,694.28 = 394,100.40/x
  3. Step 3: Cross multiply
    592,990.32x = 889,694.28 × 394,100.40
  4. Step 4: Simplify right side
    592,990.32x = 350,628,871,625.71
  5. Step 5: Solve for x
    x = 350,628,871,625.71/592,990.32
  6. Step 6: Final answer
    x = 591,289.37

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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.