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Finding the Fourth Proportional to 225,538.66, 311,243.35 and 124,936.66

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Solution

The fourth proportional to 225,538.66, 311,243.35 and 124,936.66 is: 172,412.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,538.66 : 311,243.35 = 124,936.66 : x
  2. Step 2: Convert to fraction form
    225,538.66/311,243.35 = 124,936.66/x
  3. Step 3: Cross multiply
    225,538.66x = 311,243.35 × 124,936.66
  4. Step 4: Simplify right side
    225,538.66x = 38,885,704,596.21
  5. Step 5: Solve for x
    x = 38,885,704,596.21/225,538.66
  6. Step 6: Final answer
    x = 172,412.59

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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.