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Finding the Fourth Proportional to 611,732.62, 917,793.94 and 256,651.30

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Solution

The fourth proportional to 611,732.62, 917,793.94 and 256,651.30 is: 385,058.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,732.62 : 917,793.94 = 256,651.30 : x
  2. Step 2: Convert to fraction form
    611,732.62/917,793.94 = 256,651.30/x
  3. Step 3: Cross multiply
    611,732.62x = 917,793.94 × 256,651.30
  4. Step 4: Simplify right side
    611,732.62x = 235,553,007,833.12
  5. Step 5: Solve for x
    x = 235,553,007,833.12/611,732.62
  6. Step 6: Final answer
    x = 385,058.77

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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.