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Finding the Fourth Proportional to 49,043.40, 73,574.70 and 20,963.40

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Solution

The fourth proportional to 49,043.40, 73,574.70 and 20,963.40 is: 31,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,043.40 : 73,574.70 = 20,963.40 : x
  2. Step 2: Convert to fraction form
    49,043.40/73,574.70 = 20,963.40/x
  3. Step 3: Cross multiply
    49,043.40x = 73,574.70 × 20,963.40
  4. Step 4: Simplify right side
    49,043.40x = 1,542,375,865.98
  5. Step 5: Solve for x
    x = 1,542,375,865.98/49,043.40
  6. Step 6: Final answer
    x = 31,449.20

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1.5x scale

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.