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Finding the Fourth Proportional to 118,599.80, 163,727.93 and 80,560.58

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Solution

The fourth proportional to 118,599.80, 163,727.93 and 80,560.58 is: 111,214.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,599.80 : 163,727.93 = 80,560.58 : x
  2. Step 2: Convert to fraction form
    118,599.80/163,727.93 = 80,560.58/x
  3. Step 3: Cross multiply
    118,599.80x = 163,727.93 × 80,560.58
  4. Step 4: Simplify right side
    118,599.80x = 13,190,016,385.76
  5. Step 5: Solve for x
    x = 13,190,016,385.76/118,599.80
  6. Step 6: Final answer
    x = 111,214.50

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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.