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Finding the Fourth Proportional to 424,012.92, 636,041.16 and 108,472.56

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Solution

The fourth proportional to 424,012.92, 636,041.16 and 108,472.56 is: 162,714.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,012.92 : 636,041.16 = 108,472.56 : x
  2. Step 2: Convert to fraction form
    424,012.92/636,041.16 = 108,472.56/x
  3. Step 3: Cross multiply
    424,012.92x = 636,041.16 × 108,472.56
  4. Step 4: Simplify right side
    424,012.92x = 68,993,012,890.57
  5. Step 5: Solve for x
    x = 68,993,012,890.57/424,012.92
  6. Step 6: Final answer
    x = 162,714.41

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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.