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Finding the Fourth Proportional to 836,994, 1,256,043.96 and 393,796.56

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Solution

The fourth proportional to 836,994, 1,256,043.96 and 393,796.56 is: 590,955.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,994 : 1,256,043.96 = 393,796.56 : x
  2. Step 2: Convert to fraction form
    836,994/1,256,043.96 = 393,796.56/x
  3. Step 3: Cross multiply
    836,994x = 1,256,043.96 × 393,796.56
  4. Step 4: Simplify right side
    836,994x = 494,625,790,656.78
  5. Step 5: Solve for x
    x = 494,625,790,656.78/836,994
  6. Step 6: Final answer
    x = 590,955.00

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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.