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Finding the Fourth Proportional to 276,932.34, 415,401.84 and 77,240.57

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Solution

The fourth proportional to 276,932.34, 415,401.84 and 77,240.57 is: 115,861.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,932.34 : 415,401.84 = 77,240.57 : x
  2. Step 2: Convert to fraction form
    276,932.34/415,401.84 = 77,240.57/x
  3. Step 3: Cross multiply
    276,932.34x = 415,401.84 × 77,240.57
  4. Step 4: Simplify right side
    276,932.34x = 32,085,872,823.64
  5. Step 5: Solve for x
    x = 32,085,872,823.64/276,932.34
  6. Step 6: Final answer
    x = 115,861.78

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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.