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Finding the Fourth Proportional to 118,197.93, 163,111.61 and 64,481.81

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Solution

The fourth proportional to 118,197.93, 163,111.61 and 64,481.81 is: 88,984.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,197.93 : 163,111.61 = 64,481.81 : x
  2. Step 2: Convert to fraction form
    118,197.93/163,111.61 = 64,481.81/x
  3. Step 3: Cross multiply
    118,197.93x = 163,111.61 × 64,481.81
  4. Step 4: Simplify right side
    118,197.93x = 10,517,730,706.85
  5. Step 5: Solve for x
    x = 10,517,730,706.85/118,197.93
  6. Step 6: Final answer
    x = 88,984.05

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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.