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Finding the Fourth Proportional to 33,115.40, 49,668.30 and 9,739.40

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Solution

The fourth proportional to 33,115.40, 49,668.30 and 9,739.40 is: 14,607.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,115.40 : 49,668.30 = 9,739.40 : x
  2. Step 2: Convert to fraction form
    33,115.40/49,668.30 = 9,739.40/x
  3. Step 3: Cross multiply
    33,115.40x = 49,668.30 × 9,739.40
  4. Step 4: Simplify right side
    33,115.40x = 483,739,441.02
  5. Step 5: Solve for x
    x = 483,739,441.02/33,115.40
  6. Step 6: Final answer
    x = 14,607.69

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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.