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Finding the Fourth Proportional to 638,553.80, 958,203.48 and 354,483.56

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Solution

The fourth proportional to 638,553.80, 958,203.48 and 354,483.56 is: 531,932.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,553.80 : 958,203.48 = 354,483.56 : x
  2. Step 2: Convert to fraction form
    638,553.80/958,203.48 = 354,483.56/x
  3. Step 3: Cross multiply
    638,553.80x = 958,203.48 × 354,483.56
  4. Step 4: Simplify right side
    638,553.80x = 339,667,380,794.79
  5. Step 5: Solve for x
    x = 339,667,380,794.79/638,553.80
  6. Step 6: Final answer
    x = 531,932.28

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1.5x scale

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.