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Finding the Fourth Proportional to 89,974.80, 134,765.37 and 58,274.64

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Solution

The fourth proportional to 89,974.80, 134,765.37 and 58,274.64 is: 87,284.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,974.80 : 134,765.37 = 58,274.64 : x
  2. Step 2: Convert to fraction form
    89,974.80/134,765.37 = 58,274.64/x
  3. Step 3: Cross multiply
    89,974.80x = 134,765.37 × 58,274.64
  4. Step 4: Simplify right side
    89,974.80x = 7,853,403,421.22
  5. Step 5: Solve for x
    x = 7,853,403,421.22/89,974.80
  6. Step 6: Final answer
    x = 87,284.48

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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.