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Finding the Fourth Proportional to 568,631.90, 784,428.45 and 339,027.26

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Solution

The fourth proportional to 568,631.90, 784,428.45 and 339,027.26 is: 467,688.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,631.90 : 784,428.45 = 339,027.26 : x
  2. Step 2: Convert to fraction form
    568,631.90/784,428.45 = 339,027.26/x
  3. Step 3: Cross multiply
    568,631.90x = 784,428.45 × 339,027.26
  4. Step 4: Simplify right side
    568,631.90x = 265,942,628,069.55
  5. Step 5: Solve for x
    x = 265,942,628,069.55/568,631.90
  6. Step 6: Final answer
    x = 467,688.55

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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.