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Finding the Fourth Proportional to 375,665.21, 563,319.44 and 217,942.01

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Solution

The fourth proportional to 375,665.21, 563,319.44 and 217,942.01 is: 326,809.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,665.21 : 563,319.44 = 217,942.01 : x
  2. Step 2: Convert to fraction form
    375,665.21/563,319.44 = 217,942.01/x
  3. Step 3: Cross multiply
    375,665.21x = 563,319.44 × 217,942.01
  4. Step 4: Simplify right side
    375,665.21x = 122,770,969,935.96
  5. Step 5: Solve for x
    x = 122,770,969,935.96/375,665.21
  6. Step 6: Final answer
    x = 326,809.53

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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.