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Finding the Fourth Proportional to 118,675.66, 163,772.60 and 64,964.08

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Solution

The fourth proportional to 118,675.66, 163,772.60 and 64,964.08 is: 89,650.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,675.66 : 163,772.60 = 64,964.08 : x
  2. Step 2: Convert to fraction form
    118,675.66/163,772.60 = 64,964.08/x
  3. Step 3: Cross multiply
    118,675.66x = 163,772.60 × 64,964.08
  4. Step 4: Simplify right side
    118,675.66x = 10,639,336,288.21
  5. Step 5: Solve for x
    x = 10,639,336,288.21/118,675.66
  6. Step 6: Final answer
    x = 89,650.53

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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.