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Finding the Fourth Proportional to 104,907.56, 144,770.61 and 57,161.30

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Solution

The fourth proportional to 104,907.56, 144,770.61 and 57,161.30 is: 78,881.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,907.56 : 144,770.61 = 57,161.30 : x
  2. Step 2: Convert to fraction form
    104,907.56/144,770.61 = 57,161.30/x
  3. Step 3: Cross multiply
    104,907.56x = 144,770.61 × 57,161.30
  4. Step 4: Simplify right side
    104,907.56x = 8,275,276,269.39
  5. Step 5: Solve for x
    x = 8,275,276,269.39/104,907.56
  6. Step 6: Final answer
    x = 78,881.60

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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.