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Finding the Fourth Proportional to 25,461.92, 38,163.72 and 13,784.96

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Solution

The fourth proportional to 25,461.92, 38,163.72 and 13,784.96 is: 20,661.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,461.92 : 38,163.72 = 13,784.96 : x
  2. Step 2: Convert to fraction form
    25,461.92/38,163.72 = 13,784.96/x
  3. Step 3: Cross multiply
    25,461.92x = 38,163.72 × 13,784.96
  4. Step 4: Simplify right side
    25,461.92x = 526,085,353.65
  5. Step 5: Solve for x
    x = 526,085,353.65/25,461.92
  6. Step 6: Final answer
    x = 20,661.65

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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.