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Finding the Fourth Proportional to 161,713.60, 242,570.40 and 73,067.20

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Solution

The fourth proportional to 161,713.60, 242,570.40 and 73,067.20 is: 109,600.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,713.60 : 242,570.40 = 73,067.20 : x
  2. Step 2: Convert to fraction form
    161,713.60/242,570.40 = 73,067.20/x
  3. Step 3: Cross multiply
    161,713.60x = 242,570.40 × 73,067.20
  4. Step 4: Simplify right side
    161,713.60x = 17,723,939,930.88
  5. Step 5: Solve for x
    x = 17,723,939,930.88/161,713.60
  6. Step 6: Final answer
    x = 109,600.80

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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.