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Finding the Fourth Proportional to 104,805.44, 144,631.84 and 57,059.20

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Solution

The fourth proportional to 104,805.44, 144,631.84 and 57,059.20 is: 78,741.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,805.44 : 144,631.84 = 57,059.20 : x
  2. Step 2: Convert to fraction form
    104,805.44/144,631.84 = 57,059.20/x
  3. Step 3: Cross multiply
    104,805.44x = 144,631.84 × 57,059.20
  4. Step 4: Simplify right side
    104,805.44x = 8,252,577,084.93
  5. Step 5: Solve for x
    x = 8,252,577,084.93/104,805.44
  6. Step 6: Final answer
    x = 78,741.88

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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.