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Finding the Fourth Proportional to 118,682.98, 163,708.74 and 73,374.82

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Solution

The fourth proportional to 118,682.98, 163,708.74 and 73,374.82 is: 101,211.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,682.98 : 163,708.74 = 73,374.82 : x
  2. Step 2: Convert to fraction form
    118,682.98/163,708.74 = 73,374.82/x
  3. Step 3: Cross multiply
    118,682.98x = 163,708.74 × 73,374.82
  4. Step 4: Simplify right side
    118,682.98x = 12,012,099,329.93
  5. Step 5: Solve for x
    x = 12,012,099,329.93/118,682.98
  6. Step 6: Final answer
    x = 101,211.64

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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.