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Finding the Fourth Proportional to 61,626.80, 92,440.20 and 54,369.20

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Solution

The fourth proportional to 61,626.80, 92,440.20 and 54,369.20 is: 81,553.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,626.80 : 92,440.20 = 54,369.20 : x
  2. Step 2: Convert to fraction form
    61,626.80/92,440.20 = 54,369.20/x
  3. Step 3: Cross multiply
    61,626.80x = 92,440.20 × 54,369.20
  4. Step 4: Simplify right side
    61,626.80x = 5,025,899,721.84
  5. Step 5: Solve for x
    x = 5,025,899,721.84/61,626.80
  6. Step 6: Final answer
    x = 81,553.80

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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.