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Finding the Fourth Proportional to 118,711.93, 163,822.48 and 64,996.96

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Solution

The fourth proportional to 118,711.93, 163,822.48 and 64,996.96 is: 89,695.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,711.93 : 163,822.48 = 64,996.96 : x
  2. Step 2: Convert to fraction form
    118,711.93/163,822.48 = 64,996.96/x
  3. Step 3: Cross multiply
    118,711.93x = 163,822.48 × 64,996.96
  4. Step 4: Simplify right side
    118,711.93x = 10,647,963,179.66
  5. Step 5: Solve for x
    x = 10,647,963,179.66/118,711.93
  6. Step 6: Final answer
    x = 89,695.81

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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.