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Finding the Fourth Proportional to 62,815.91, 86,684.85 and 34,520.99

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Solution

The fourth proportional to 62,815.91, 86,684.85 and 34,520.99 is: 47,638.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,815.91 : 86,684.85 = 34,520.99 : x
  2. Step 2: Convert to fraction form
    62,815.91/86,684.85 = 34,520.99/x
  3. Step 3: Cross multiply
    62,815.91x = 86,684.85 × 34,520.99
  4. Step 4: Simplify right side
    62,815.91x = 2,992,446,406.58
  5. Step 5: Solve for x
    x = 2,992,446,406.58/62,815.91
  6. Step 6: Final answer
    x = 47,638.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.