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Finding the Fourth Proportional to 38,855.65, 53,620.87 and 22,941.12

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Solution

The fourth proportional to 38,855.65, 53,620.87 and 22,941.12 is: 31,658.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,855.65 : 53,620.87 = 22,941.12 : x
  2. Step 2: Convert to fraction form
    38,855.65/53,620.87 = 22,941.12/x
  3. Step 3: Cross multiply
    38,855.65x = 53,620.87 × 22,941.12
  4. Step 4: Simplify right side
    38,855.65x = 1,230,122,813.17
  5. Step 5: Solve for x
    x = 1,230,122,813.17/38,855.65
  6. Step 6: Final answer
    x = 31,658.79

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Double scale
Find fourth proportional to 38,856.65, 53,622.25 and 22,942.12
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.