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Finding the Fourth Proportional to 447,792.40, 671,674.20 and 148,286.80

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Solution

The fourth proportional to 447,792.40, 671,674.20 and 148,286.80 is: 222,425.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,792.40 : 671,674.20 = 148,286.80 : x
  2. Step 2: Convert to fraction form
    447,792.40/671,674.20 = 148,286.80/x
  3. Step 3: Cross multiply
    447,792.40x = 671,674.20 × 148,286.80
  4. Step 4: Simplify right side
    447,792.40x = 99,600,417,760.56
  5. Step 5: Solve for x
    x = 99,600,417,760.56/447,792.40
  6. Step 6: Final answer
    x = 222,425.43

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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.