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Finding the Fourth Proportional to 49,209.80, 73,814.70 and 48,345.80

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Solution

The fourth proportional to 49,209.80, 73,814.70 and 48,345.80 is: 72,518.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,209.80 : 73,814.70 = 48,345.80 : x
  2. Step 2: Convert to fraction form
    49,209.80/73,814.70 = 48,345.80/x
  3. Step 3: Cross multiply
    49,209.80x = 73,814.70 × 48,345.80
  4. Step 4: Simplify right side
    49,209.80x = 3,568,630,723.26
  5. Step 5: Solve for x
    x = 3,568,630,723.26/49,209.80
  6. Step 6: Final answer
    x = 72,518.70

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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.