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Finding the Fourth Proportional to 436,129.20, 654,193.80 and 373,921.20

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Solution

The fourth proportional to 436,129.20, 654,193.80 and 373,921.20 is: 560,881.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,129.20 : 654,193.80 = 373,921.20 : x
  2. Step 2: Convert to fraction form
    436,129.20/654,193.80 = 373,921.20/x
  3. Step 3: Cross multiply
    436,129.20x = 654,193.80 × 373,921.20
  4. Step 4: Simplify right side
    436,129.20x = 244,616,930,728.56
  5. Step 5: Solve for x
    x = 244,616,930,728.56/436,129.20
  6. Step 6: Final answer
    x = 560,881.80

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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.