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Finding the Fourth Proportional to 400,787.15, 601,585.82 and 355,491.83

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Solution

The fourth proportional to 400,787.15, 601,585.82 and 355,491.83 is: 533,597.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,787.15 : 601,585.82 = 355,491.83 : x
  2. Step 2: Convert to fraction form
    400,787.15/601,585.82 = 355,491.83/x
  3. Step 3: Cross multiply
    400,787.15x = 601,585.82 × 355,491.83
  4. Step 4: Simplify right side
    400,787.15x = 213,858,844,053.85
  5. Step 5: Solve for x
    x = 213,858,844,053.85/400,787.15
  6. Step 6: Final answer
    x = 533,597.06

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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.