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Finding the Fourth Proportional to 608,644.98, 839,833.65 and 393,794.10

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Solution

The fourth proportional to 608,644.98, 839,833.65 and 393,794.10 is: 543,373.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,644.98 : 839,833.65 = 393,794.10 : x
  2. Step 2: Convert to fraction form
    608,644.98/839,833.65 = 393,794.10/x
  3. Step 3: Cross multiply
    608,644.98x = 839,833.65 × 393,794.10
  4. Step 4: Simplify right side
    608,644.98x = 330,721,536,351.47
  5. Step 5: Solve for x
    x = 330,721,536,351.47/608,644.98
  6. Step 6: Final answer
    x = 543,373.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.