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Finding the Fourth Proportional to 59,209.92, 81,722.16 and 57,336.48

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Solution

The fourth proportional to 59,209.92, 81,722.16 and 57,336.48 is: 79,136.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,209.92 : 81,722.16 = 57,336.48 : x
  2. Step 2: Convert to fraction form
    59,209.92/81,722.16 = 57,336.48/x
  3. Step 3: Cross multiply
    59,209.92x = 81,722.16 × 57,336.48
  4. Step 4: Simplify right side
    59,209.92x = 4,685,660,992.40
  5. Step 5: Solve for x
    x = 4,685,660,992.40/59,209.92
  6. Step 6: Final answer
    x = 79,136.42

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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.