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Finding the Fourth Proportional to 118,656.27, 163,743.93 and 64,940.49

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Solution

The fourth proportional to 118,656.27, 163,743.93 and 64,940.49 is: 89,616.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,656.27 : 163,743.93 = 64,940.49 : x
  2. Step 2: Convert to fraction form
    118,656.27/163,743.93 = 64,940.49/x
  3. Step 3: Cross multiply
    118,656.27x = 163,743.93 × 64,940.49
  4. Step 4: Simplify right side
    118,656.27x = 10,633,611,048.73
  5. Step 5: Solve for x
    x = 10,633,611,048.73/118,656.27
  6. Step 6: Final answer
    x = 89,616.93

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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.