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Finding the Fourth Proportional to 61,274.20, 91,757.70 and 48,986.20

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Solution

The fourth proportional to 61,274.20, 91,757.70 and 48,986.20 is: 73,356.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,274.20 : 91,757.70 = 48,986.20 : x
  2. Step 2: Convert to fraction form
    61,274.20/91,757.70 = 48,986.20/x
  3. Step 3: Cross multiply
    61,274.20x = 91,757.70 × 48,986.20
  4. Step 4: Simplify right side
    61,274.20x = 4,494,861,043.74
  5. Step 5: Solve for x
    x = 4,494,861,043.74/61,274.20
  6. Step 6: Final answer
    x = 73,356.50

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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.