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Finding the Fourth Proportional to 322,778.56, 445,753.83 and 265,980.64

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Solution

The fourth proportional to 322,778.56, 445,753.83 and 265,980.64 is: 367,316.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,778.56 : 445,753.83 = 265,980.64 : x
  2. Step 2: Convert to fraction form
    322,778.56/445,753.83 = 265,980.64/x
  3. Step 3: Cross multiply
    322,778.56x = 445,753.83 × 265,980.64
  4. Step 4: Simplify right side
    322,778.56x = 118,561,888,985.85
  5. Step 5: Solve for x
    x = 118,561,888,985.85/322,778.56
  6. Step 6: Final answer
    x = 367,316.49

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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.