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Finding the Fourth Proportional to 65,629.44, 90,537.10 and 42,958.44

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Solution

The fourth proportional to 65,629.44, 90,537.10 and 42,958.44 is: 59,262.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,629.44 : 90,537.10 = 42,958.44 : x
  2. Step 2: Convert to fraction form
    65,629.44/90,537.10 = 42,958.44/x
  3. Step 3: Cross multiply
    65,629.44x = 90,537.10 × 42,958.44
  4. Step 4: Simplify right side
    65,629.44x = 3,889,332,578.12
  5. Step 5: Solve for x
    x = 3,889,332,578.12/65,629.44
  6. Step 6: Final answer
    x = 59,262.01

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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.