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Finding the Fourth Proportional to 394,598,672.70, 591,898,009.05 and 394,598,672.70

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Solution

The fourth proportional to 394,598,672.70, 591,898,009.05 and 394,598,672.70 is: 591,898,009.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,598,672.70 : 591,898,009.05 = 394,598,672.70 : x
  2. Step 2: Convert to fraction form
    394,598,672.70/591,898,009.05 = 394,598,672.70/x
  3. Step 3: Cross multiply
    394,598,672.70x = 591,898,009.05 × 394,598,672.70
  4. Step 4: Simplify right side
    394,598,672.70x = 233,562,168,744,902,560
  5. Step 5: Solve for x
    x = 233,562,168,744,902,560/394,598,672.70
  6. Step 6: Final answer
    x = 591,898,009.05

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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.