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Finding the Fourth Proportional to 91,952.24, 137,889.48 and 28,755.40

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Solution

The fourth proportional to 91,952.24, 137,889.48 and 28,755.40 is: 43,120.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,952.24 : 137,889.48 = 28,755.40 : x
  2. Step 2: Convert to fraction form
    91,952.24/137,889.48 = 28,755.40/x
  3. Step 3: Cross multiply
    91,952.24x = 137,889.48 × 28,755.40
  4. Step 4: Simplify right side
    91,952.24x = 3,965,067,153.19
  5. Step 5: Solve for x
    x = 3,965,067,153.19/91,952.24
  6. Step 6: Final answer
    x = 43,120.94

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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.