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Finding the Fourth Proportional to 68,922.90, 103,374.36 and 22,169.70

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Solution

The fourth proportional to 68,922.90, 103,374.36 and 22,169.70 is: 33,251.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,922.90 : 103,374.36 = 22,169.70 : x
  2. Step 2: Convert to fraction form
    68,922.90/103,374.36 = 22,169.70/x
  3. Step 3: Cross multiply
    68,922.90x = 103,374.36 × 22,169.70
  4. Step 4: Simplify right side
    68,922.90x = 2,291,778,548.89
  5. Step 5: Solve for x
    x = 2,291,778,548.89/68,922.90
  6. Step 6: Final answer
    x = 33,251.34

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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.