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Finding the Fourth Proportional to 324,370.49, 486,644.49 and 156,031.56

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Solution

The fourth proportional to 324,370.49, 486,644.49 and 156,031.56 is: 234,090.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,370.49 : 486,644.49 = 156,031.56 : x
  2. Step 2: Convert to fraction form
    324,370.49/486,644.49 = 156,031.56/x
  3. Step 3: Cross multiply
    324,370.49x = 486,644.49 × 156,031.56
  4. Step 4: Simplify right side
    324,370.49x = 75,931,898,940.10
  5. Step 5: Solve for x
    x = 75,931,898,940.10/324,370.49
  6. Step 6: Final answer
    x = 234,090.04

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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.