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Finding the Fourth Proportional to 80,564.76, 120,864.42 and 33,790.68

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Solution

The fourth proportional to 80,564.76, 120,864.42 and 33,790.68 is: 50,693.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,564.76 : 120,864.42 = 33,790.68 : x
  2. Step 2: Convert to fraction form
    80,564.76/120,864.42 = 33,790.68/x
  3. Step 3: Cross multiply
    80,564.76x = 120,864.42 × 33,790.68
  4. Step 4: Simplify right side
    80,564.76x = 4,084,090,939.61
  5. Step 5: Solve for x
    x = 4,084,090,939.61/80,564.76
  6. Step 6: Final answer
    x = 50,693.27

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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.