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Finding the Fourth Proportional to 80,558, 120,862.68 and 33,798.32

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Solution

The fourth proportional to 80,558, 120,862.68 and 33,798.32 is: 50,708.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,558 : 120,862.68 = 33,798.32 : x
  2. Step 2: Convert to fraction form
    80,558/120,862.68 = 33,798.32/x
  3. Step 3: Cross multiply
    80,558x = 120,862.68 × 33,798.32
  4. Step 4: Simplify right side
    80,558x = 4,084,955,534.70
  5. Step 5: Solve for x
    x = 4,084,955,534.70/80,558
  6. Step 6: Final answer
    x = 50,708.25

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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.