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Finding the Fourth Proportional to 73,309.20, 109,963.80 and 62,811.60

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Solution

The fourth proportional to 73,309.20, 109,963.80 and 62,811.60 is: 94,217.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,309.20 : 109,963.80 = 62,811.60 : x
  2. Step 2: Convert to fraction form
    73,309.20/109,963.80 = 62,811.60/x
  3. Step 3: Cross multiply
    73,309.20x = 109,963.80 × 62,811.60
  4. Step 4: Simplify right side
    73,309.20x = 6,907,002,220.08
  5. Step 5: Solve for x
    x = 6,907,002,220.08/73,309.20
  6. Step 6: Final answer
    x = 94,217.40

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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.