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Finding the Fourth Proportional to 118,690.98, 163,719.78 and 73,382.82

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Solution

The fourth proportional to 118,690.98, 163,719.78 and 73,382.82 is: 101,222.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,690.98 : 163,719.78 = 73,382.82 : x
  2. Step 2: Convert to fraction form
    118,690.98/163,719.78 = 73,382.82/x
  3. Step 3: Cross multiply
    118,690.98x = 163,719.78 × 73,382.82
  4. Step 4: Simplify right side
    118,690.98x = 12,014,219,146.18
  5. Step 5: Solve for x
    x = 12,014,219,146.18/118,690.98
  6. Step 6: Final answer
    x = 101,222.68

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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.