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Finding the Fourth Proportional to 118,758.82, 163,887.42 and 64,311.58

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Solution

The fourth proportional to 118,758.82, 163,887.42 and 64,311.58 is: 88,750.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,758.82 : 163,887.42 = 64,311.58 : x
  2. Step 2: Convert to fraction form
    118,758.82/163,887.42 = 64,311.58/x
  3. Step 3: Cross multiply
    118,758.82x = 163,887.42 × 64,311.58
  4. Step 4: Simplify right side
    118,758.82x = 10,539,858,922.32
  5. Step 5: Solve for x
    x = 10,539,858,922.32/118,758.82
  6. Step 6: Final answer
    x = 88,750.11

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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.