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Finding the Fourth Proportional to 188,963.81, 260,770.04 and 104,080.86

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Solution

The fourth proportional to 188,963.81, 260,770.04 and 104,080.86 is: 143,631.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,963.81 : 260,770.04 = 104,080.86 : x
  2. Step 2: Convert to fraction form
    188,963.81/260,770.04 = 104,080.86/x
  3. Step 3: Cross multiply
    188,963.81x = 260,770.04 × 104,080.86
  4. Step 4: Simplify right side
    188,963.81x = 27,141,169,505.03
  5. Step 5: Solve for x
    x = 27,141,169,505.03/188,963.81
  6. Step 6: Final answer
    x = 143,631.58

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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.