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Finding the Fourth Proportional to 371,362.80, 557,044.20 and 347,743.20

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Solution

The fourth proportional to 371,362.80, 557,044.20 and 347,743.20 is: 521,614.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,362.80 : 557,044.20 = 347,743.20 : x
  2. Step 2: Convert to fraction form
    371,362.80/557,044.20 = 347,743.20/x
  3. Step 3: Cross multiply
    371,362.80x = 557,044.20 × 347,743.20
  4. Step 4: Simplify right side
    371,362.80x = 193,708,332,649.44
  5. Step 5: Solve for x
    x = 193,708,332,649.44/371,362.80
  6. Step 6: Final answer
    x = 521,614.80

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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.