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Finding the Fourth Proportional to 320,280.20, 441,978.88 and 177,036.56

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Solution

The fourth proportional to 320,280.20, 441,978.88 and 177,036.56 is: 244,306.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,280.20 : 441,978.88 = 177,036.56 : x
  2. Step 2: Convert to fraction form
    320,280.20/441,978.88 = 177,036.56/x
  3. Step 3: Cross multiply
    320,280.20x = 441,978.88 × 177,036.56
  4. Step 4: Simplify right side
    320,280.20x = 78,246,420,507.85
  5. Step 5: Solve for x
    x = 78,246,420,507.85/320,280.20
  6. Step 6: Final answer
    x = 244,306.14

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1.5x scale

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.