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Finding the Fourth Proportional to 424,013.17, 636,016.51 and 108,469.57

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Solution

The fourth proportional to 424,013.17, 636,016.51 and 108,469.57 is: 162,703.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,013.17 : 636,016.51 = 108,469.57 : x
  2. Step 2: Convert to fraction form
    424,013.17/636,016.51 = 108,469.57/x
  3. Step 3: Cross multiply
    424,013.17x = 636,016.51 × 108,469.57
  4. Step 4: Simplify right side
    424,013.17x = 68,988,437,352.60
  5. Step 5: Solve for x
    x = 68,988,437,352.60/424,013.17
  6. Step 6: Final answer
    x = 162,703.52

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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.