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Finding the Fourth Proportional to 94,978.08, 142,425.84 and 45,072.48

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Solution

The fourth proportional to 94,978.08, 142,425.84 and 45,072.48 is: 67,589.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,978.08 : 142,425.84 = 45,072.48 : x
  2. Step 2: Convert to fraction form
    94,978.08/142,425.84 = 45,072.48/x
  3. Step 3: Cross multiply
    94,978.08x = 142,425.84 × 45,072.48
  4. Step 4: Simplify right side
    94,978.08x = 6,419,485,824.88
  5. Step 5: Solve for x
    x = 6,419,485,824.88/94,978.08
  6. Step 6: Final answer
    x = 67,589.13

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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.