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Finding the Fourth Proportional to 449,021.56, 673,643.22 and 133,477.12

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Solution

The fourth proportional to 449,021.56, 673,643.22 and 133,477.12 is: 200,248.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,021.56 : 673,643.22 = 133,477.12 : x
  2. Step 2: Convert to fraction form
    449,021.56/673,643.22 = 133,477.12/x
  3. Step 3: Cross multiply
    449,021.56x = 673,643.22 × 133,477.12
  4. Step 4: Simplify right side
    449,021.56x = 89,915,956,913.13
  5. Step 5: Solve for x
    x = 89,915,956,913.13/449,021.56
  6. Step 6: Final answer
    x = 200,248.64

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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.