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Finding the Fourth Proportional to 68,866.86, 103,300.20 and 22,152.54

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Solution

The fourth proportional to 68,866.86, 103,300.20 and 22,152.54 is: 33,228.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,866.86 : 103,300.20 = 22,152.54 : x
  2. Step 2: Convert to fraction form
    68,866.86/103,300.20 = 22,152.54/x
  3. Step 3: Cross multiply
    68,866.86x = 103,300.20 × 22,152.54
  4. Step 4: Simplify right side
    68,866.86x = 2,288,361,812.51
  5. Step 5: Solve for x
    x = 2,288,361,812.51/68,866.86
  6. Step 6: Final answer
    x = 33,228.78

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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.