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Finding the Fourth Proportional to 33,947.20, 50,920.80 and 31,028.80

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Solution

The fourth proportional to 33,947.20, 50,920.80 and 31,028.80 is: 46,543.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,947.20 : 50,920.80 = 31,028.80 : x
  2. Step 2: Convert to fraction form
    33,947.20/50,920.80 = 31,028.80/x
  3. Step 3: Cross multiply
    33,947.20x = 50,920.80 × 31,028.80
  4. Step 4: Simplify right side
    33,947.20x = 1,580,011,319.04
  5. Step 5: Solve for x
    x = 1,580,011,319.04/33,947.20
  6. Step 6: Final answer
    x = 46,543.20

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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.