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Finding the Fourth Proportional to 169,640.40, 253,942.20 and 169,640.40

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Solution

The fourth proportional to 169,640.40, 253,942.20 and 169,640.40 is: 253,942.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,640.40 : 253,942.20 = 169,640.40 : x
  2. Step 2: Convert to fraction form
    169,640.40/253,942.20 = 169,640.40/x
  3. Step 3: Cross multiply
    169,640.40x = 253,942.20 × 169,640.40
  4. Step 4: Simplify right side
    169,640.40x = 43,078,856,384.88
  5. Step 5: Solve for x
    x = 43,078,856,384.88/169,640.40
  6. Step 6: Final answer
    x = 253,942.20

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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.