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Finding the Fourth Proportional to 393,082.80, 589,624.20 and 366,838.80

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Solution

The fourth proportional to 393,082.80, 589,624.20 and 366,838.80 is: 550,258.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,082.80 : 589,624.20 = 366,838.80 : x
  2. Step 2: Convert to fraction form
    393,082.80/589,624.20 = 366,838.80/x
  3. Step 3: Cross multiply
    393,082.80x = 589,624.20 × 366,838.80
  4. Step 4: Simplify right side
    393,082.80x = 216,297,033,978.96
  5. Step 5: Solve for x
    x = 216,297,033,978.96/393,082.80
  6. Step 6: Final answer
    x = 550,258.20

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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.