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Finding the Fourth Proportional to 111,656.88, 154,093.39 and 63,909.14

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Solution

The fourth proportional to 111,656.88, 154,093.39 and 63,909.14 is: 88,198.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,656.88 : 154,093.39 = 63,909.14 : x
  2. Step 2: Convert to fraction form
    111,656.88/154,093.39 = 63,909.14/x
  3. Step 3: Cross multiply
    111,656.88x = 154,093.39 × 63,909.14
  4. Step 4: Simplify right side
    111,656.88x = 9,847,975,104.34
  5. Step 5: Solve for x
    x = 9,847,975,104.34/111,656.88
  6. Step 6: Final answer
    x = 88,198.55

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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.