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Finding the Fourth Proportional to 436,105.80, 654,158.70 and 409,840.20

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Solution

The fourth proportional to 436,105.80, 654,158.70 and 409,840.20 is: 614,760.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,105.80 : 654,158.70 = 409,840.20 : x
  2. Step 2: Convert to fraction form
    436,105.80/654,158.70 = 409,840.20/x
  3. Step 3: Cross multiply
    436,105.80x = 654,158.70 × 409,840.20
  4. Step 4: Simplify right side
    436,105.80x = 268,100,532,439.74
  5. Step 5: Solve for x
    x = 268,100,532,439.74/436,105.80
  6. Step 6: Final answer
    x = 614,760.30

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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.