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Finding the Fourth Proportional to 137,666.80, 206,451.60 and 48,923.20

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Solution

The fourth proportional to 137,666.80, 206,451.60 and 48,923.20 is: 73,367.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,666.80 : 206,451.60 = 48,923.20 : x
  2. Step 2: Convert to fraction form
    137,666.80/206,451.60 = 48,923.20/x
  3. Step 3: Cross multiply
    137,666.80x = 206,451.60 × 48,923.20
  4. Step 4: Simplify right side
    137,666.80x = 10,100,272,917.12
  5. Step 5: Solve for x
    x = 10,100,272,917.12/137,666.80
  6. Step 6: Final answer
    x = 73,367.53

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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.