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Finding the Fourth Proportional to 652,236.70, 978,355.05 and 403,404.70

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Solution

The fourth proportional to 652,236.70, 978,355.05 and 403,404.70 is: 605,107.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,236.70 : 978,355.05 = 403,404.70 : x
  2. Step 2: Convert to fraction form
    652,236.70/978,355.05 = 403,404.70/x
  3. Step 3: Cross multiply
    652,236.70x = 978,355.05 × 403,404.70
  4. Step 4: Simplify right side
    652,236.70x = 394,673,025,438.74
  5. Step 5: Solve for x
    x = 394,673,025,438.74/652,236.70
  6. Step 6: Final answer
    x = 605,107.05

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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.