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Finding the Fourth Proportional to 188,963.54, 260,769.64 and 104,080.60

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Solution

The fourth proportional to 188,963.54, 260,769.64 and 104,080.60 is: 143,631.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,963.54 : 260,769.64 = 104,080.60 : x
  2. Step 2: Convert to fraction form
    188,963.54/260,769.64 = 104,080.60/x
  3. Step 3: Cross multiply
    188,963.54x = 260,769.64 × 104,080.60
  4. Step 4: Simplify right side
    188,963.54x = 27,141,060,364.95
  5. Step 5: Solve for x
    x = 27,141,060,364.95/188,963.54
  6. Step 6: Final answer
    x = 143,631.20

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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.