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Finding the Fourth Proportional to 118,957.36, 164,160.96 and 68,656.32

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Solution

The fourth proportional to 118,957.36, 164,160.96 and 68,656.32 is: 94,745.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,957.36 : 164,160.96 = 68,656.32 : x
  2. Step 2: Convert to fraction form
    118,957.36/164,160.96 = 68,656.32/x
  3. Step 3: Cross multiply
    118,957.36x = 164,160.96 × 68,656.32
  4. Step 4: Simplify right side
    118,957.36x = 11,270,687,401.27
  5. Step 5: Solve for x
    x = 11,270,687,401.27/118,957.36
  6. Step 6: Final answer
    x = 94,745.61

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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.