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Finding the Fourth Proportional to 118,665.66, 163,758.81 and 64,954.08

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Solution

The fourth proportional to 118,665.66, 163,758.81 and 64,954.08 is: 89,636.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,665.66 : 163,758.81 = 64,954.08 : x
  2. Step 2: Convert to fraction form
    118,665.66/163,758.81 = 64,954.08/x
  3. Step 3: Cross multiply
    118,665.66x = 163,758.81 × 64,954.08
  4. Step 4: Simplify right side
    118,665.66x = 10,636,802,845.44
  5. Step 5: Solve for x
    x = 10,636,802,845.44/118,665.66
  6. Step 6: Final answer
    x = 89,636.74

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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.