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Finding the Fourth Proportional to 118,672.97, 163,765.40 and 67,684.50

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Solution

The fourth proportional to 118,672.97, 163,765.40 and 67,684.50 is: 93,402.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,672.97 : 163,765.40 = 67,684.50 : x
  2. Step 2: Convert to fraction form
    118,672.97/163,765.40 = 67,684.50/x
  3. Step 3: Cross multiply
    118,672.97x = 163,765.40 × 67,684.50
  4. Step 4: Simplify right side
    118,672.97x = 11,084,378,877.88
  5. Step 5: Solve for x
    x = 11,084,378,877.88/118,672.97
  6. Step 6: Final answer
    x = 93,402.73

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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.