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Finding the Fourth Proportional to 118,610.42, 163,680.92 and 64,894.66

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Solution

The fourth proportional to 118,610.42, 163,680.92 and 64,894.66 is: 89,553.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,610.42 : 163,680.92 = 64,894.66 : x
  2. Step 2: Convert to fraction form
    118,610.42/163,680.92 = 64,894.66/x
  3. Step 3: Cross multiply
    118,610.42x = 163,680.92 × 64,894.66
  4. Step 4: Simplify right side
    118,610.42x = 10,622,016,918.21
  5. Step 5: Solve for x
    x = 10,622,016,918.21/118,610.42
  6. Step 6: Final answer
    x = 89,553.83

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1.5x scale

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.