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Finding the Fourth Proportional to 276,381.30, 381,270.87 and 168,765.11

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Solution

The fourth proportional to 276,381.30, 381,270.87 and 168,765.11 is: 232,813.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,381.30 : 381,270.87 = 168,765.11 : x
  2. Step 2: Convert to fraction form
    276,381.30/381,270.87 = 168,765.11/x
  3. Step 3: Cross multiply
    276,381.30x = 381,270.87 × 168,765.11
  4. Step 4: Simplify right side
    276,381.30x = 64,345,218,408.99
  5. Step 5: Solve for x
    x = 64,345,218,408.99/276,381.30
  6. Step 6: Final answer
    x = 232,813.21

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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.