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Finding the Fourth Proportional to 445,963.44, 669,047.28 and 193,286.40

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Solution

The fourth proportional to 445,963.44, 669,047.28 and 193,286.40 is: 289,973.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,963.44 : 669,047.28 = 193,286.40 : x
  2. Step 2: Convert to fraction form
    445,963.44/669,047.28 = 193,286.40/x
  3. Step 3: Cross multiply
    445,963.44x = 669,047.28 × 193,286.40
  4. Step 4: Simplify right side
    445,963.44x = 129,317,740,180.99
  5. Step 5: Solve for x
    x = 129,317,740,180.99/445,963.44
  6. Step 6: Final answer
    x = 289,973.86

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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.