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Finding the Fourth Proportional to 99,793.80, 149,909.40 and 73,666.44

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Solution

The fourth proportional to 99,793.80, 149,909.40 and 73,666.44 is: 110,661.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,793.80 : 149,909.40 = 73,666.44 : x
  2. Step 2: Convert to fraction form
    99,793.80/149,909.40 = 73,666.44/x
  3. Step 3: Cross multiply
    99,793.80x = 149,909.40 × 73,666.44
  4. Step 4: Simplify right side
    99,793.80x = 11,043,291,820.54
  5. Step 5: Solve for x
    x = 11,043,291,820.54/99,793.80
  6. Step 6: Final answer
    x = 110,661.10

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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.