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Finding the Fourth Proportional to 481,364.20, 722,308.62 and 215,113.96

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Solution

The fourth proportional to 481,364.20, 722,308.62 and 215,113.96 is: 322,788.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,364.20 : 722,308.62 = 215,113.96 : x
  2. Step 2: Convert to fraction form
    481,364.20/722,308.62 = 215,113.96/x
  3. Step 3: Cross multiply
    481,364.20x = 722,308.62 × 215,113.96
  4. Step 4: Simplify right side
    481,364.20x = 155,378,667,590.34
  5. Step 5: Solve for x
    x = 155,378,667,590.34/481,364.20
  6. Step 6: Final answer
    x = 322,788.17

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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.