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Finding the Fourth Proportional to 118,577.88, 163,697.22 and 91,659.60

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Solution

The fourth proportional to 118,577.88, 163,697.22 and 91,659.60 is: 126,536.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,577.88 : 163,697.22 = 91,659.60 : x
  2. Step 2: Convert to fraction form
    118,577.88/163,697.22 = 91,659.60/x
  3. Step 3: Cross multiply
    118,577.88x = 163,697.22 × 91,659.60
  4. Step 4: Simplify right side
    118,577.88x = 15,004,421,706.31
  5. Step 5: Solve for x
    x = 15,004,421,706.31/118,577.88
  6. Step 6: Final answer
    x = 126,536.43

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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.