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Finding the Fourth Proportional to 335,453.82, 502,516.53 and 217,208.40

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Solution

The fourth proportional to 335,453.82, 502,516.53 and 217,208.40 is: 325,382.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,453.82 : 502,516.53 = 217,208.40 : x
  2. Step 2: Convert to fraction form
    335,453.82/502,516.53 = 217,208.40/x
  3. Step 3: Cross multiply
    335,453.82x = 502,516.53 × 217,208.40
  4. Step 4: Simplify right side
    335,453.82x = 109,150,811,454.85
  5. Step 5: Solve for x
    x = 109,150,811,454.85/335,453.82
  6. Step 6: Final answer
    x = 325,382.53

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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.