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Finding the Fourth Proportional to 265,133.02, 397,761.82 and 87,640.04

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Solution

The fourth proportional to 265,133.02, 397,761.82 and 87,640.04 is: 131,480.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,133.02 : 397,761.82 = 87,640.04 : x
  2. Step 2: Convert to fraction form
    265,133.02/397,761.82 = 87,640.04/x
  3. Step 3: Cross multiply
    265,133.02x = 397,761.82 × 87,640.04
  4. Step 4: Simplify right side
    265,133.02x = 34,859,861,815.27
  5. Step 5: Solve for x
    x = 34,859,861,815.27/265,133.02
  6. Step 6: Final answer
    x = 131,480.65

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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.