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Finding the Fourth Proportional to 394,009.80, 591,014.70 and 394,009.80

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Solution

The fourth proportional to 394,009.80, 591,014.70 and 394,009.80 is: 591,014.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,009.80 : 591,014.70 = 394,009.80 : x
  2. Step 2: Convert to fraction form
    394,009.80/591,014.70 = 394,009.80/x
  3. Step 3: Cross multiply
    394,009.80x = 591,014.70 × 394,009.80
  4. Step 4: Simplify right side
    394,009.80x = 232,865,583,744.06
  5. Step 5: Solve for x
    x = 232,865,583,744.06/394,009.80
  6. Step 6: Final answer
    x = 591,014.70

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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.