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Finding the Fourth Proportional to 276,254.62, 381,406.62 and 189,185.47

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Solution

The fourth proportional to 276,254.62, 381,406.62 and 189,185.47 is: 261,195.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,254.62 : 381,406.62 = 189,185.47 : x
  2. Step 2: Convert to fraction form
    276,254.62/381,406.62 = 189,185.47/x
  3. Step 3: Cross multiply
    276,254.62x = 381,406.62 × 189,185.47
  4. Step 4: Simplify right side
    276,254.62x = 72,156,590,665.81
  5. Step 5: Solve for x
    x = 72,156,590,665.81/276,254.62
  6. Step 6: Final answer
    x = 261,195.96

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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.