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Finding the Fourth Proportional to 118,961.52, 164,080.84 and 101,028.12

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Solution

The fourth proportional to 118,961.52, 164,080.84 and 101,028.12 is: 139,345.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,961.52 : 164,080.84 = 101,028.12 : x
  2. Step 2: Convert to fraction form
    118,961.52/164,080.84 = 101,028.12/x
  3. Step 3: Cross multiply
    118,961.52x = 164,080.84 × 101,028.12
  4. Step 4: Simplify right side
    118,961.52x = 16,576,778,793.22
  5. Step 5: Solve for x
    x = 16,576,778,793.22/118,961.52
  6. Step 6: Final answer
    x = 139,345.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.