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Finding the Fourth Proportional to 118,704.55, 163,811.84 and 67,717.19

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Solution

The fourth proportional to 118,704.55, 163,811.84 and 67,717.19 is: 93,449.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,704.55 : 163,811.84 = 67,717.19 : x
  2. Step 2: Convert to fraction form
    118,704.55/163,811.84 = 67,717.19/x
  3. Step 3: Cross multiply
    118,704.55x = 163,811.84 × 67,717.19
  4. Step 4: Simplify right side
    118,704.55x = 11,092,877,493.53
  5. Step 5: Solve for x
    x = 11,092,877,493.53/118,704.55
  6. Step 6: Final answer
    x = 93,449.47

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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.