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Finding the Fourth Proportional to 408,661.64, 563,944.22 and 236,586.89

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Solution

The fourth proportional to 408,661.64, 563,944.22 and 236,586.89 is: 326,484.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,661.64 : 563,944.22 = 236,586.89 : x
  2. Step 2: Convert to fraction form
    408,661.64/563,944.22 = 236,586.89/x
  3. Step 3: Cross multiply
    408,661.64x = 563,944.22 × 236,586.89
  4. Step 4: Simplify right side
    408,661.64x = 133,421,805,140.62
  5. Step 5: Solve for x
    x = 133,421,805,140.62/408,661.64
  6. Step 6: Final answer
    x = 326,484.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.