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Finding the Fourth Proportional to 74,650.60, 112,037.10 and 74,067.40

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Solution

The fourth proportional to 74,650.60, 112,037.10 and 74,067.40 is: 111,161.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,650.60 : 112,037.10 = 74,067.40 : x
  2. Step 2: Convert to fraction form
    74,650.60/112,037.10 = 74,067.40/x
  3. Step 3: Cross multiply
    74,650.60x = 112,037.10 × 74,067.40
  4. Step 4: Simplify right side
    74,650.60x = 8,298,296,700.54
  5. Step 5: Solve for x
    x = 8,298,296,700.54/74,650.60
  6. Step 6: Final answer
    x = 111,161.82

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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.