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Finding the Fourth Proportional to 118,138.34, 163,027.31 and 67,156.64

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Solution

The fourth proportional to 118,138.34, 163,027.31 and 67,156.64 is: 92,674.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,138.34 : 163,027.31 = 67,156.64 : x
  2. Step 2: Convert to fraction form
    118,138.34/163,027.31 = 67,156.64/x
  3. Step 3: Cross multiply
    118,138.34x = 163,027.31 × 67,156.64
  4. Step 4: Simplify right side
    118,138.34x = 10,948,365,216.92
  5. Step 5: Solve for x
    x = 10,948,365,216.92/118,138.34
  6. Step 6: Final answer
    x = 92,674.11

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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.