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Finding the Fourth Proportional to 66,542.96, 91,825.36 and 36,322.28

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Solution

The fourth proportional to 66,542.96, 91,825.36 and 36,322.28 is: 50,122.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,542.96 : 91,825.36 = 36,322.28 : x
  2. Step 2: Convert to fraction form
    66,542.96/91,825.36 = 36,322.28/x
  3. Step 3: Cross multiply
    66,542.96x = 91,825.36 × 36,322.28
  4. Step 4: Simplify right side
    66,542.96x = 3,335,306,437.02
  5. Step 5: Solve for x
    x = 3,335,306,437.02/66,542.96
  6. Step 6: Final answer
    x = 50,122.60

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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.