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Finding the Fourth Proportional to 279,190.85, 385,286.36 and 151,866.77

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Solution

The fourth proportional to 279,190.85, 385,286.36 and 151,866.77 is: 209,577.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,190.85 : 385,286.36 = 151,866.77 : x
  2. Step 2: Convert to fraction form
    279,190.85/385,286.36 = 151,866.77/x
  3. Step 3: Cross multiply
    279,190.85x = 385,286.36 × 151,866.77
  4. Step 4: Simplify right side
    279,190.85x = 58,512,192,332.49
  5. Step 5: Solve for x
    x = 58,512,192,332.49/279,190.85
  6. Step 6: Final answer
    x = 209,577.76

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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.