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Finding the Fourth Proportional to 118,976.34, 164,187.35 and 65,261.48

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Solution

The fourth proportional to 118,976.34, 164,187.35 and 65,261.48 is: 90,060.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,976.34 : 164,187.35 = 65,261.48 : x
  2. Step 2: Convert to fraction form
    118,976.34/164,187.35 = 65,261.48/x
  3. Step 3: Cross multiply
    118,976.34x = 164,187.35 × 65,261.48
  4. Step 4: Simplify right side
    118,976.34x = 10,715,110,539.08
  5. Step 5: Solve for x
    x = 10,715,110,539.08/118,976.34
  6. Step 6: Final answer
    x = 90,060.85

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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.