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Finding the Fourth Proportional to 73,004.20, 100,745.58 and 39,470.20

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Solution

The fourth proportional to 73,004.20, 100,745.58 and 39,470.20 is: 54,468.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,004.20 : 100,745.58 = 39,470.20 : x
  2. Step 2: Convert to fraction form
    73,004.20/100,745.58 = 39,470.20/x
  3. Step 3: Cross multiply
    73,004.20x = 100,745.58 × 39,470.20
  4. Step 4: Simplify right side
    73,004.20x = 3,976,448,191.72
  5. Step 5: Solve for x
    x = 3,976,448,191.72/73,004.20
  6. Step 6: Final answer
    x = 54,468.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.