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Finding the Fourth Proportional to 118,644.12, 163,747.26 and 67,656.96

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Solution

The fourth proportional to 118,644.12, 163,747.26 and 67,656.96 is: 93,377.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,644.12 : 163,747.26 = 67,656.96 : x
  2. Step 2: Convert to fraction form
    118,644.12/163,747.26 = 67,656.96/x
  3. Step 3: Cross multiply
    118,644.12x = 163,747.26 × 67,656.96
  4. Step 4: Simplify right side
    118,644.12x = 11,078,641,819.93
  5. Step 5: Solve for x
    x = 11,078,641,819.93/118,644.12
  6. Step 6: Final answer
    x = 93,377.08

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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.