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Finding the Fourth Proportional to 424,694.10, 637,044.39 and 155,015.55

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Solution

The fourth proportional to 424,694.10, 637,044.39 and 155,015.55 is: 232,524.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,694.10 : 637,044.39 = 155,015.55 : x
  2. Step 2: Convert to fraction form
    424,694.10/637,044.39 = 155,015.55/x
  3. Step 3: Cross multiply
    424,694.10x = 637,044.39 × 155,015.55
  4. Step 4: Simplify right side
    424,694.10x = 98,751,786,490.26
  5. Step 5: Solve for x
    x = 98,751,786,490.26/424,694.10
  6. Step 6: Final answer
    x = 232,524.51

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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.