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Finding the Fourth Proportional to 324,327.65, 486,493.20 and 212,714.66

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Solution

The fourth proportional to 324,327.65, 486,493.20 and 212,714.66 is: 319,073.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,327.65 : 486,493.20 = 212,714.66 : x
  2. Step 2: Convert to fraction form
    324,327.65/486,493.20 = 212,714.66/x
  3. Step 3: Cross multiply
    324,327.65x = 486,493.20 × 212,714.66
  4. Step 4: Simplify right side
    324,327.65x = 103,484,236,846.55
  5. Step 5: Solve for x
    x = 103,484,236,846.55/324,327.65
  6. Step 6: Final answer
    x = 319,073.13

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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.