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Finding the Fourth Proportional to 276,635.58, 381,760.71 and 161,985.66

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Solution

The fourth proportional to 276,635.58, 381,760.71 and 161,985.66 is: 223,542.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,635.58 : 381,760.71 = 161,985.66 : x
  2. Step 2: Convert to fraction form
    276,635.58/381,760.71 = 161,985.66/x
  3. Step 3: Cross multiply
    276,635.58x = 381,760.71 × 161,985.66
  4. Step 4: Simplify right side
    276,635.58x = 61,839,760,571.42
  5. Step 5: Solve for x
    x = 61,839,760,571.42/276,635.58
  6. Step 6: Final answer
    x = 223,542.32

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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.