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Finding the Fourth Proportional to 61,674.75, 92,526.75 and 20,121.75

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Solution

The fourth proportional to 61,674.75, 92,526.75 and 20,121.75 is: 30,187.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,674.75 : 92,526.75 = 20,121.75 : x
  2. Step 2: Convert to fraction form
    61,674.75/92,526.75 = 20,121.75/x
  3. Step 3: Cross multiply
    61,674.75x = 92,526.75 × 20,121.75
  4. Step 4: Simplify right side
    61,674.75x = 1,861,800,131.81
  5. Step 5: Solve for x
    x = 1,861,800,131.81/61,674.75
  6. Step 6: Final answer
    x = 30,187.40

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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.