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Finding the Fourth Proportional to 49,155.88, 73,734.09 and 12,219.88

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Solution

The fourth proportional to 49,155.88, 73,734.09 and 12,219.88 is: 18,329.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,155.88 : 73,734.09 = 12,219.88 : x
  2. Step 2: Convert to fraction form
    49,155.88/73,734.09 = 12,219.88/x
  3. Step 3: Cross multiply
    49,155.88x = 73,734.09 × 12,219.88
  4. Step 4: Simplify right side
    49,155.88x = 901,021,363.04
  5. Step 5: Solve for x
    x = 901,021,363.04/49,155.88
  6. Step 6: Final answer
    x = 18,329.88

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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.