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Finding the Fourth Proportional to 61,892.10, 92,728.80 and 50,738.40

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Solution

The fourth proportional to 61,892.10, 92,728.80 and 50,738.40 is: 76,017.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,892.10 : 92,728.80 = 50,738.40 : x
  2. Step 2: Convert to fraction form
    61,892.10/92,728.80 = 50,738.40/x
  3. Step 3: Cross multiply
    61,892.10x = 92,728.80 × 50,738.40
  4. Step 4: Simplify right side
    61,892.10x = 4,704,910,945.92
  5. Step 5: Solve for x
    x = 4,704,910,945.92/61,892.10
  6. Step 6: Final answer
    x = 76,017.96

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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.