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Finding the Fourth Proportional to 120,770.87, 166,548.96 and 88,035.53

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Solution

The fourth proportional to 120,770.87, 166,548.96 and 88,035.53 is: 121,405.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,770.87 : 166,548.96 = 88,035.53 : x
  2. Step 2: Convert to fraction form
    120,770.87/166,548.96 = 88,035.53/x
  3. Step 3: Cross multiply
    120,770.87x = 166,548.96 × 88,035.53
  4. Step 4: Simplify right side
    120,770.87x = 14,662,225,131.80
  5. Step 5: Solve for x
    x = 14,662,225,131.80/120,770.87
  6. Step 6: Final answer
    x = 121,405.32

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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.