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Finding the Fourth Proportional to 274,908.60, 412,122.90 and 106,543.80

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Solution

The fourth proportional to 274,908.60, 412,122.90 and 106,543.80 is: 159,722.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,908.60 : 412,122.90 = 106,543.80 : x
  2. Step 2: Convert to fraction form
    274,908.60/412,122.90 = 106,543.80/x
  3. Step 3: Cross multiply
    274,908.60x = 412,122.90 × 106,543.80
  4. Step 4: Simplify right side
    274,908.60x = 43,909,139,833.02
  5. Step 5: Solve for x
    x = 43,909,139,833.02/274,908.60
  6. Step 6: Final answer
    x = 159,722.69

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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.