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Finding the Fourth Proportional to 293,644.80, 440,467.20 and 211,315.20

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Solution

The fourth proportional to 293,644.80, 440,467.20 and 211,315.20 is: 316,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,644.80 : 440,467.20 = 211,315.20 : x
  2. Step 2: Convert to fraction form
    293,644.80/440,467.20 = 211,315.20/x
  3. Step 3: Cross multiply
    293,644.80x = 440,467.20 × 211,315.20
  4. Step 4: Simplify right side
    293,644.80x = 93,077,414,461.44
  5. Step 5: Solve for x
    x = 93,077,414,461.44/293,644.80
  6. Step 6: Final answer
    x = 316,972.80

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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.