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Finding the Fourth Proportional to 118,468.80, 163,472.16 and 68,171.04

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Solution

The fourth proportional to 118,468.80, 163,472.16 and 68,171.04 is: 94,067.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,468.80 : 163,472.16 = 68,171.04 : x
  2. Step 2: Convert to fraction form
    118,468.80/163,472.16 = 68,171.04/x
  3. Step 3: Cross multiply
    118,468.80x = 163,472.16 × 68,171.04
  4. Step 4: Simplify right side
    118,468.80x = 11,144,067,158.25
  5. Step 5: Solve for x
    x = 11,144,067,158.25/118,468.80
  6. Step 6: Final answer
    x = 94,067.53

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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.