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Finding the Fourth Proportional to 61,216.20, 91,738.06 and 48,680.60

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Solution

The fourth proportional to 61,216.20, 91,738.06 and 48,680.60 is: 72,952.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,216.20 : 91,738.06 = 48,680.60 : x
  2. Step 2: Convert to fraction form
    61,216.20/91,738.06 = 48,680.60/x
  3. Step 3: Cross multiply
    61,216.20x = 91,738.06 × 48,680.60
  4. Step 4: Simplify right side
    61,216.20x = 4,465,863,803.64
  5. Step 5: Solve for x
    x = 4,465,863,803.64/61,216.20
  6. Step 6: Final answer
    x = 72,952.32

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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.