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Finding the Fourth Proportional to 276,369.33, 414,554.00 and 76,689.78

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Solution

The fourth proportional to 276,369.33, 414,554.00 and 76,689.78 is: 115,034.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,369.33 : 414,554.00 = 76,689.78 : x
  2. Step 2: Convert to fraction form
    276,369.33/414,554.00 = 76,689.78/x
  3. Step 3: Cross multiply
    276,369.33x = 414,554.00 × 76,689.78
  4. Step 4: Simplify right side
    276,369.33x = 31,792,052,601.90
  5. Step 5: Solve for x
    x = 31,792,052,601.90/276,369.33
  6. Step 6: Final answer
    x = 115,034.66

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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.