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Finding the Fourth Proportional to 67,458.78, 101,193.06 and 25,905.78

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Solution

The fourth proportional to 67,458.78, 101,193.06 and 25,905.78 is: 38,860.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,458.78 : 101,193.06 = 25,905.78 : x
  2. Step 2: Convert to fraction form
    67,458.78/101,193.06 = 25,905.78/x
  3. Step 3: Cross multiply
    67,458.78x = 101,193.06 × 25,905.78
  4. Step 4: Simplify right side
    67,458.78x = 2,621,485,149.89
  5. Step 5: Solve for x
    x = 2,621,485,149.89/67,458.78
  6. Step 6: Final answer
    x = 38,860.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.