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Finding the Fourth Proportional to 118,640.58, 163,724.01 and 64,925.62

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Solution

The fourth proportional to 118,640.58, 163,724.01 and 64,925.62 is: 89,597.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,640.58 : 163,724.01 = 64,925.62 : x
  2. Step 2: Convert to fraction form
    118,640.58/163,724.01 = 64,925.62/x
  3. Step 3: Cross multiply
    118,640.58x = 163,724.01 × 64,925.62
  4. Step 4: Simplify right side
    118,640.58x = 10,629,882,858.14
  5. Step 5: Solve for x
    x = 10,629,882,858.14/118,640.58
  6. Step 6: Final answer
    x = 89,597.36

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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.