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Finding the Fourth Proportional to 49,148.59, 73,722.94 and 12,212.59

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Solution

The fourth proportional to 49,148.59, 73,722.94 and 12,212.59 is: 18,318.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,148.59 : 73,722.94 = 12,212.59 : x
  2. Step 2: Convert to fraction form
    49,148.59/73,722.94 = 12,212.59/x
  3. Step 3: Cross multiply
    49,148.59x = 73,722.94 × 12,212.59
  4. Step 4: Simplify right side
    49,148.59x = 900,348,039.81
  5. Step 5: Solve for x
    x = 900,348,039.81/49,148.59
  6. Step 6: Final answer
    x = 18,318.90

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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.