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Finding the Fourth Proportional to 276,364.70, 413,562.90 and 191,727.80

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Solution

The fourth proportional to 276,364.70, 413,562.90 and 191,727.80 is: 286,908.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,364.70 : 413,562.90 = 191,727.80 : x
  2. Step 2: Convert to fraction form
    276,364.70/413,562.90 = 191,727.80/x
  3. Step 3: Cross multiply
    276,364.70x = 413,562.90 × 191,727.80
  4. Step 4: Simplify right side
    276,364.70x = 79,291,504,978.62
  5. Step 5: Solve for x
    x = 79,291,504,978.62/276,364.70
  6. Step 6: Final answer
    x = 286,908.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.