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Finding the Fourth Proportional to 118,496.58, 163,518.66 and 64,770.90

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Solution

The fourth proportional to 118,496.58, 163,518.66 and 64,770.90 is: 89,380.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,496.58 : 163,518.66 = 64,770.90 : x
  2. Step 2: Convert to fraction form
    118,496.58/163,518.66 = 64,770.90/x
  3. Step 3: Cross multiply
    118,496.58x = 163,518.66 × 64,770.90
  4. Step 4: Simplify right side
    118,496.58x = 10,591,250,774.99
  5. Step 5: Solve for x
    x = 10,591,250,774.99/118,496.58
  6. Step 6: Final answer
    x = 89,380.22

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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.