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Finding the Fourth Proportional to 344,556.70, 515,814.45 and 256,201.90

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Solution

The fourth proportional to 344,556.70, 515,814.45 and 256,201.90 is: 383,543.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,556.70 : 515,814.45 = 256,201.90 : x
  2. Step 2: Convert to fraction form
    344,556.70/515,814.45 = 256,201.90/x
  3. Step 3: Cross multiply
    344,556.70x = 515,814.45 × 256,201.90
  4. Step 4: Simplify right side
    344,556.70x = 132,152,642,137.46
  5. Step 5: Solve for x
    x = 132,152,642,137.46/344,556.70
  6. Step 6: Final answer
    x = 383,543.96

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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.