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Finding the Fourth Proportional to 118,682.20, 163,791.21 and 67,697.02

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Solution

The fourth proportional to 118,682.20, 163,791.21 and 67,697.02 is: 93,427.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,682.20 : 163,791.21 = 67,697.02 : x
  2. Step 2: Convert to fraction form
    118,682.20/163,791.21 = 67,697.02/x
  3. Step 3: Cross multiply
    118,682.20x = 163,791.21 × 67,697.02
  4. Step 4: Simplify right side
    118,682.20x = 11,088,176,819.19
  5. Step 5: Solve for x
    x = 11,088,176,819.19/118,682.20
  6. Step 6: Final answer
    x = 93,427.46

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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.