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Finding the Fourth Proportional to 303,619.24, 418,992.42 and 167,661.64

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Solution

The fourth proportional to 303,619.24, 418,992.42 and 167,661.64 is: 231,371.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,619.24 : 418,992.42 = 167,661.64 : x
  2. Step 2: Convert to fraction form
    303,619.24/418,992.42 = 167,661.64/x
  3. Step 3: Cross multiply
    303,619.24x = 418,992.42 × 167,661.64
  4. Step 4: Simplify right side
    303,619.24x = 70,248,956,284.77
  5. Step 5: Solve for x
    x = 70,248,956,284.77/303,619.24
  6. Step 6: Final answer
    x = 231,371.89

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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.