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Finding the Fourth Proportional to 99,654.75, 137,523.57 and 54,942.75

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Solution

The fourth proportional to 99,654.75, 137,523.57 and 54,942.75 is: 75,821.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,654.75 : 137,523.57 = 54,942.75 : x
  2. Step 2: Convert to fraction form
    99,654.75/137,523.57 = 54,942.75/x
  3. Step 3: Cross multiply
    99,654.75x = 137,523.57 × 54,942.75
  4. Step 4: Simplify right side
    99,654.75x = 7,555,923,125.62
  5. Step 5: Solve for x
    x = 7,555,923,125.62/99,654.75
  6. Step 6: Final answer
    x = 75,821.00

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1.5x scale

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.