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Finding the Fourth Proportional to 118,672.32, 163,735.40 and 67,666.44

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Solution

The fourth proportional to 118,672.32, 163,735.40 and 67,666.44 is: 93,361.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,672.32 : 163,735.40 = 67,666.44 : x
  2. Step 2: Convert to fraction form
    118,672.32/163,735.40 = 67,666.44/x
  3. Step 3: Cross multiply
    118,672.32x = 163,735.40 × 67,666.44
  4. Step 4: Simplify right side
    118,672.32x = 11,079,391,619.98
  5. Step 5: Solve for x
    x = 11,079,391,619.98/118,672.32
  6. Step 6: Final answer
    x = 93,361.21

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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.