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Finding the Fourth Proportional to 406,661.37, 561,192.66 and 225,400.53

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Solution

The fourth proportional to 406,661.37, 561,192.66 and 225,400.53 is: 311,052.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,661.37 : 561,192.66 = 225,400.53 : x
  2. Step 2: Convert to fraction form
    406,661.37/561,192.66 = 225,400.53/x
  3. Step 3: Cross multiply
    406,661.37x = 561,192.66 × 225,400.53
  4. Step 4: Simplify right side
    406,661.37x = 126,493,122,996.11
  5. Step 5: Solve for x
    x = 126,493,122,996.11/406,661.37
  6. Step 6: Final answer
    x = 311,052.71

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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.